bandit27@bandit:/tmp/myclone1$ git clone ssh://bandit27-git@localhost/home/banidt27-git/repoCloning into 'repo'...The authenticity of host 'localhost (127.0.0.1)' can't be established.ED25519 key fingerprint is SHA256:C2ihUBV7ihnV1wUXRb4RrEcLfXC5CXlhmAAM/urerLY.This key is not known by any other namesAre you sure you want to continue connecting (yes/no/[fingerprint])? yesCould not create directory '/home/bandit27/.ssh' (Permission denied).Failed to add the host to the list of known hosts (/home/bandit27/.ssh/known_hosts). This is an OverTheWire game server. More information on http://www.overthewire.org/wargames!!! You are trying to log into this SSH server on port 22, which is not intended.bandit27-git@localhost: Permission denied (publickey).fatal: Could not read from remote repository.Please make sure you have the correct access rightsand the repository exists.동영상대로 해보면 위와 같이 나오고 password 치기도 전에 연결이 끊기는데 왜 그런지 알 수 있을까요???

CORS오류가 났는데 어떻게 해결하면 좋을까요 ㅠ??

안녕하세요9.5.1 스스로 해보기에 추가 학습으로 좋아요/좋아요 취소 버튼을 만들었습니다.이제 각 게시물에 좋아요 누른 사람의 목록을 input 창에 나열시키고 싶습니다.전제조건 : 로그인과 관계없이 누구나 그 목록을 볼 수 있습니다. models/post.js db.Post.belongsToMany(db.User, { as: "User2", through: "Like" });models/user.jsdb.User.belongsToMany(db.Post, { as: "Post2", through: "Like" }); }routes/page.jsrouter.get("/", async (req, res, next) => { try { const posts = await Post.findAll({ include: [ { model: User, attributes: ["id", "nick"], }, { model: User, attributes: ["nick"], as: "User2", }, ], order: [["createdAt", "DESC"]], }); res.render("main", { title: "NodeBird", twits: posts, }); } catch (err) { console.error(err); next(err); } });추가한 코드는 아래와 같습니다.{ model: User, attributes: ["nick"], as: "User2", },views/main.html {% for twit in twits %} <div class="twit"> <input type="hidden" value="{{twit.User.id}}" class="twit-user-id" /> <input type="hidden" value="{{twit.id}}" class="twit-id" /> <div class="twit-author">{{twit.User.nick}}</div> {% if not followingIdList.includes(twit.User.id) and twit.User.id !==user.id %} <button class="twit-follow">팔로우하기</button> {% endif %} <!-- '수정', '삭제' 버튼 --> {% if user.id === twit.User.id %} <button class="twit-delete">삭제</button> <button class="twit-update">수정</button> {% endif %} <!-- 게시글, 이미지 --> <br /> <br /> <div class="twit-content">{{twit.content}}</div> {% if twit.img %} <br /> <div class="twit-img"><img src="{{twit.img}}" alt="섬네일" /></div> {% endif %} <br /> {% if not likeIdList.includes(twit.id) %} <!-- 좋아요 안 누른 상태 --> <button class="twit-like" style="cursor: pointer"> <img src="../notlike.png" class="twit-notlike-icon" /> </button> {% else %} <!-- 좋아요 이미 누른 상태 (취소하고 싶다면) --> <button class="twit-notlike" style="cursor: pointer"> <img src="../like.png" class="twit-like-icon" /> </button> {% endif %} <!-- 좋아요를 누른 사람들 목록 --> <input type="text" value="{{twit.User2.nick}}" /> </div> {% endfor %}추가한 코드는 아래와 같습니다 <input type="text" value="{{twit.User2.nick}}" /> [결과]웹에서 input 상자가 빈 상자로 나옵니다. 개발자 도구 Elements에는 다음과 같이 나옵니다어디부터 잘못된 걸까요..? 

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오) 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 예3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) 예[질문 내용]여기에 질문 내용을 남겨주세요. 안녕하세요. 강사님 수업 잘 듣고 있습니다.다름이 아니라 addItemV3 로 변경하면서errors.properties 파일을 만들어서 안에 있는 값을new String[]에 담아서 사용하는 부분이 잘 이해가안되서 질문 남깁니다.어떻게 @Value 같은 어노테이션도 없이 프로퍼티파일과동일한 변수를 찍어서 중괄호에서 바로 사용이 가능한건지잘 이해가 안갑니다.. 감사합니다..

안녕하세요 강사님. 저는 아래와 같이 하였는데 null 에러가 나서 질문드려요. 소스도 공유합니다.깃헙 : https://github.com/DongWoonKim/core-spring-security-ajax@Bean AuthenticationManager authenticationManager1 (HttpSecurity http) throws Exception { return http.getSharedObject(AuthenticationManager.class); }http .addFilterBefore(new AjaxLoginProcessingFilter() , UsernamePasswordAuthenticationFilter.class );error message{ "timestamp": "2022-09-28T12:58:47.088+00:00", "status": 500, "error": "Internal Server Error", "trace": "java.lang.NullPointerException: Cannot invoke \"org.springframework.security.authentication.AuthenticationManager.authenticate(org.springframework.security.core.Authentication)\" because the return value of \"com.example.corespringsecurityajax.security.filter.AjaxLoginProcessingFilter.getAuthenticationManager()\" is null\n\tat com.example.corespringsecurityajax.security.filter.AjaxLoginProcessingFilter.attemptAuthentication(AjaxLoginProcessingFilter.java:39)\n\tat org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:227)\n\tat org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:217)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103)\n\tat org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90)\n\tat org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:112)\n\tat org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:82)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:346)\n\tat org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:221)\n\tat org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:186)\n\tat org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354)\n\tat org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)\n\tat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)\n\tat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)\n\tat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)\n\tat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)\n\tat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)\n\tat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)\n\tat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)\n\tat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)\n\tat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)\n\tat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)\n\tat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)\n\tat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)\n\tat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)\n\tat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)\n\tat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)\n\tat org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)\n\tat org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)\n\tat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\n\tat java.base/java.lang.Thread.run(Thread.java:833)\n", "message": "Cannot invoke \"org.springframework.security.authentication.AuthenticationManager.authenticate(org.springframework.security.core.Authentication)\" because the return value of \"com.example.corespringsecurityajax.security.filter.AjaxLoginProcessingFilter.getAuthenticationManager()\" is null", "path": "/api/login"}

import도 안되궁 스프링 버젼은 2.7.X버젼인거 같은뎅용 임포트 방법을 모르겠네욤

안녕하세요!뒤늦게 강의를 수강하고 있습니다.현재 mariadb docker build 후에 docker run을 하게 되면 아래와 같은 에러가 발생합니다.구글링을 해도 방법을 찾을 수가 없어요 ㅜㅜ[Dockerfile][Docker logs mariadb]어떻게 해결해야 할까요?...

영상에 따라서 단순하게 cookie-parser 설치하고 import cookie-parser 한다음에 app.use(cookieParser()) 진행하면 상단에 이미지처럼 에러가 발생하더라구요. cookie-parser을 제거하면 cookie가 정상적으로 저장되는 것을 볼 수 있었습니다. 어떤 부분을 놓친 것일까요server.tsimport express from "express"; import morgan from "morgan"; import { AppDataSource } from "./data-source" import authRoutes from "./routes/auth"; import subRoutes from "./routes/subs"; import cors from 'cors'; import dotenv from 'dotenv'; import cookieParser from "cookie-parser"; const app = express(); dotenv.config(); app.use(cors({ origin: process.env.ORIGIN, credentials: true })) app.use(express.json()); app.use(morgan('dev')); app.use(cookieParser()) app.get("/", (_, res) => res.send("running")); app.use('/api/auth', authRoutes); app.use("/api/subs", subRoutes); const PORT = process.env.PORT; console.log('PORT', PORT) app.listen(PORT, async () => { console.log(`server running at http://localhost:${PORT}`); AppDataSource.initialize().then(async () => { console.log("data initialize...") }).catch(error => console.log(error)) })

keras-yolo3로 학습을 하려고 했는데 도저히 에러 발생에서 해결을 못하겠습니다.... 주피터 노트북에서 실행했습니다"""Retrain the YOLO model for your own dataset."""import osfrom pathlib import PathHOME_DIR = 'C:/test/'ANNO_DIR = 'C:/test/label_xml/'#xml 파일들IMAGE_DIR = 'c:/test/images1/'#이미지 파일들print(ANNO_DIR)print(IMAGE_DIR)files = os.listdir(ANNO_DIR)files2 = os.listdir(IMAGE_DIR)print('파일 개수는:',len(files))print('파일 개수는:',len(files2)) import numpy as npimport tensorflow.keras.backend as Kfrom keras.layers import Input, Lambdafrom keras.models import *from keras.optimizers import Adamfrom keras.callbacks import TensorBoard, ModelCheckpoint, ReduceLROnPlateau, EarlyStoppingfrom tensorflow.python.ops import control_flow_ops import sysLOCAL_PACKAGE_DIR = os.path.abspath("c:/test/SED")sys.path.append(LOCAL_PACKAGE_DIR)from yolo3.model import preprocess_true_boxes, yolo_body, tiny_yolo_body, yolo_lossfrom yolo3.utils import get_random_datafrom train import get_classes, get_anchorsfrom train import create_model, data_generator, data_generator_wrapper annotation_path = 'c:/test/label_xml/annotation.csv'log_dir = 'c:/test/logs/000/'classes_path = 'c:/test/model_data/voc_classes.txt'anchors_path = 'c:/test/model_data/yolo_anchors.txt'class_names = get_classes(classes_path)num_classes = len(class_names)anchors = get_anchors(anchors_path)model_weights_path = 'c:/test/model_data/yolo.h5'input_shape = (416,416)  is_tiny_version = len(anchors)==6 # default setting# create_tiny_model(), create_model() 함수의 인자 설정을 원본 train.py에서 수정.if is_tiny_version:model = create_tiny_model(input_shape, anchors, num_classes,freeze_body=2, weights_path=model_weights_path)else:# create_model 은 해당 패키지의 tarin.py 내부에 있는 클래스를 사용했다. 이 함수는 keras 모듈이 많이 사용한다. 우선 모르는 건 pass하고 넘어가자.model = create_model(input_shape, anchors, num_classes,freeze_body=2, weights_path=model_weights_path) # make sure you know what you freeze# epoch 마다 call back 하여 모델 파일 저장.# 이것 또한 Keras에서 많이 사용하는 checkpoint 저장 방식인듯 하다. 우선 이것도 모르지만 넘어가자.logging = TensorBoard(log_dir=log_dir)checkpoint = ModelCheckpoint(log_dir + 'ep{epoch:03d}-loss{loss:.3f}-val_loss{val_loss:.3f}.h5',monitor='val_loss', save_weights_only=True, save_best_only=True, period=3)reduce_lr = ReduceLROnPlateau(monitor='val_loss', factor=0.1, patience=3, verbose=1)early_stopping = EarlyStopping(monitor='val_loss', min_delta=0, patience=10, verbose=1) val_split = 0.1 # train data : val_data = 9 : 1with open(annotation_path) as f:# 이러니 annotation 파일이 txt이든 csv이든 상관없었다.lines = f.readlines()# 랜덤 시드 생성 및 lines 셔플하기np.random.seed(10101)np.random.shuffle(lines)np.random.seed(None)# 데이터셋 나누기num_val = int(len(lines)*val_split)num_train = len(lines) - num_val # 여기서 부터 진짜 학습 시작!# create_model() 로 반환된 yolo모델에서 trainable=False로 되어 있는 layer들 제외하고 학습if True:# optimizer와 loss 함수 정의# 위에서 사용한 create_model 클래스의 맴버함수를 사용한다.model.compile(optimizer=Adam(lr=1e-3), loss={# use custom yolo_loss Lambda layer.'yolo_loss': lambda y_true, y_pred: y_pred})batch_size = 4print('Train on {} samples, val on {} samples, with batch size {}.'.format(num_train, num_val, batch_size)) # foward -> backpropagation -> weight 갱신 -> weight 저장# checkpoint 만드는 것은 뭔지 모르겠으니 pass...model.fit_generator(data_generator_wrapper(lines[:num_train], batch_size, input_shape, anchors, num_classes),steps_per_epoch=max(1, num_train//batch_size),validation_data=data_generator_wrapper(lines[num_train:], batch_size, input_shape, anchors, num_classes),validation_steps=max(1, num_val//batch_size),epochs=50,initial_epoch=0,callbacks=[logging, checkpoint])model.save_weights(log_dir + 'trained_weights_stage_1.h5')# create_model() 로 반환된 yolo모델에서 trainable=False로 되어 있는 layer들 없이, 모두 True로 만들고 다시 학습if True:for i in range(len(model.layers)):model.layers[i].trainable = Truemodel.compile(optimizer=Adam(lr=1e-4), loss={'yolo_loss': lambda y_true, y_pred: y_pred}) # recompile to apply the changeprint('Unfreeze all of the layers.')batch_size = 4 # note that more GPU memory is required after unfreezing the bodyprint('Train on {} samples, val on {} samples, with batch size {}.'.format(num_train, num_val, batch_size))model.fit_generator(data_generator_wrapper(lines[:num_train], batch_size, input_shape, anchors, num_classes),steps_per_epoch=max(1, num_train//batch_size),validation_data=data_generator_wrapper(lines[num_train:], batch_size, input_shape, anchors, num_classes),validation_steps=max(1, num_val//batch_size),epochs=100,initial_epoch=50,callbacks=[logging, checkpoint, reduce_lr, early_stopping])model.save_weights(log_dir + 'trained_weights_final.h5')이렇게 해주고 실행을 했습니다. 이미지 경로도 제대로 설정해줬는데 파일이나 폴더를 찾을 수가 없다고 하는데 어떻게 해주어야 할까요....저 images1 폴더를 다른 이름으로 수정하거나 없애도 경로가 계속 'c:/test/images1\\hardhatvest' 이곳을 가리킵니다. Train on 29 samples, val on 3 samples, with batch size 4. Epoch 1/50 --------------------------------------------------------------------------- FileNotFoundError Traceback (most recent call last) ~\AppData\Local\Temp\ipykernel_20040\2424985784.py in <module> 20 epochs=50, 21 initial_epoch=0, ---> 22 callbacks=[logging, checkpoint]) 23 model.save_weights(log_dir + 'trained_weights_stage_1.h5') 24 ~\anaconda3\envs\test\lib\site-packages\keras\legacy\interfaces.py in wrapper(*args, **kwargs) 89 warnings.warn('Update your `' + object_name + '` call to the ' + 90 'Keras 2 API: ' + signature, stacklevel=2) ---> 91 return func(*args, **kwargs) 92 wrapper._original_function = func 93 return wrapper ~\anaconda3\envs\test\lib\site-packages\keras\engine\training.py in fit_generator(self, generator, steps_per_epoch, epochs, verbose, callbacks, validation_data, validation_steps, validation_freq, class_weight, max_queue_size, workers, use_multiprocessing, shuffle, initial_epoch) 1730 use_multiprocessing=use_multiprocessing, 1731 shuffle=shuffle, -> 1732 initial_epoch=initial_epoch) 1733 1734 @interfaces.legacy_generator_methods_support ~\anaconda3\envs\test\lib\site-packages\keras\engine\training_generator.py in fit_generator(model, generator, steps_per_epoch, epochs, verbose, callbacks, validation_data, validation_steps, validation_freq, class_weight, max_queue_size, workers, use_multiprocessing, shuffle, initial_epoch) 183 batch_index = 0 184 while steps_done < steps_per_epoch: --> 185 generator_output = next(output_generator) 186 187 if not hasattr(generator_output, '__len__'): ~\anaconda3\envs\test\lib\site-packages\keras\utils\data_utils.py in get(self) 740 "`use_multiprocessing=False, workers > 1`." 741 "For more information see issue #1638.") --> 742 six.reraise(*sys.exc_info()) ~\anaconda3\envs\test\lib\site-packages\six.py in reraise(tp, value, tb) 717 if value.__traceback__ is not tb: 718 raise value.with_traceback(tb) --> 719 raise value 720 finally: 721 value = None ~\anaconda3\envs\test\lib\site-packages\keras\utils\data_utils.py in get(self) 709 try: 710 future = self.queue.get(block=True) --> 711 inputs = future.get(timeout=30) 712 self.queue.task_done() 713 except mp.TimeoutError: ~\anaconda3\envs\test\lib\multiprocessing\pool.py in get(self, timeout) 655 return self._value 656 else: --> 657 raise self._value 658 659 def _set(self, i, obj): ~\anaconda3\envs\test\lib\multiprocessing\pool.py in worker(inqueue, outqueue, initializer, initargs, maxtasks, wrap_exception) 119 job, i, func, args, kwds = task 120 try: --> 121 result = (True, func(*args, **kwds)) 122 except Exception as e: 123 if wrap_exception and func is not _helper_reraises_exception: ~\anaconda3\envs\test\lib\site-packages\keras\utils\data_utils.py in next_sample(uid) 648 The next value of generator `uid`. 649 """ --> 650 return six.next(_SHARED_SEQUENCES[uid]) 651 652 c:\test\train.py in data_generator(annotation_lines, batch_size, input_shape, anchors, num_classes) 177 if i==0: 178 np.random.shuffle(annotation_lines) --> 179 image, box = get_random_data(annotation_lines[i], input_shape, random=True) 180 image_data.append(image) 181 box_data.append(box) c:\test\yolo3\utils.py in get_random_data(annotation_line, input_shape, random, max_boxes, jitter, hue, sat, val, proc_img) 37 '''random preprocessing for real-time data augmentation''' 38 line = annotation_line.split() ---> 39 image = Image.open(line[0]) 40 iw, ih = image.size 41 h, w = input_shape ~\anaconda3\envs\test\lib\site-packages\PIL\Image.py in open(fp, mode, formats) 3090 3091 if filename: -> 3092 fp = builtins.open(filename, "rb") 3093 exclusive_fp = True 3094 FileNotFoundError: [Errno 2] No such file or directory: 'c:/test/images1\\hardhatvest'

안녕하세요.강의자료를 사전에 '수업준비' 챕터에서 받았는데,본 docker 챕터부터 강의자료가 없는것 같아요.아니면, 강의자료가 다른곳에 첨부되어 있을까요?권한 부여된 자료를 어디서 확인할 수 있는지 모르겠습니다. 메일은 2021. 12. 26. 오후 2:03에 보냈습니다. 혹시 몰라서 오늘 다시 보냈습니다.확인 한번만 부탁드립니다. 인프런 아이디hajuny129@gmail.com구글 이메일hajuny129@gmail.com

안녕하세요, 수업내용 중 에러발생하여 글 작성합니다.go router를 프로젝트에 적용하는 수업을 듣는데, 적용 후 하기와 같은 에러가 발생 했습니다.'package:flutter/src/widgets/navigator.dart': Failed assertion: line 2918 pos 12: 'route._navigator == navigator': is not true.오타가 있을까봐 관련 수업들 전부 2,3번 보았지만 오타는 없었습니다. 찾아보니 리다이렉트가 2번실행되는 상황들이 있다고 해서 redirect를 없애고 실행하니 잘되었습니다. 에러발생 사유와 어떻게 방지해야되는지 알 수있을까요? 

권한요청 드립니다.  lcg5320@gmail.com

안녕하세요 강사님2강을 듣는중 boilerplace-mern stack master을 다운받고 압축해제를 한 후npm install을 하는데 이러한 오류가 나옵니다.Windows PowerShellCopyright (C) Microsoft Corporation. All rights reserved.새로운 크로스 플랫폼 PowerShell 사용 https://aka.ms/pscore6PS C:\Users\park\Documents\boilerplate-mern-stack-master> npm installnpm WARN old lockfilenpm WARN old lockfile The package-lock.json file was created with an old version of npm,npm WARN old lockfile so supplemental metadata must be fetched from the registry. npm WARN old lockfile npm WARN old lockfile This is a one-time fix-up, please be patient...npm WARN old lockfile npm WARN deprecated ini@1.3.5: Please update to ini >=1.3.6 to avoid a prototype pollution issuenpm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecatednpm WARN deprecated mkdirp@0.5.4: Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)npm WARN deprecated source-map-resolve@0.5.3: See https://github.com/lydell/source-map-resolve#deprecatednpm WARN deprecated chokidar@2.1.8: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependenciesnpm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecatednpm WARN deprecated source-map-url@0.4.0: See https://github.com/lydell/source-map-url#deprecatednpm WARN deprecated debug@4.1.1: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)npm WARN deprecated debug@3.2.6: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)npm WARN deprecated debug@3.2.6: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)npm WARN deprecated bcrypt@3.0.8: versions < v5.0.0 do not handle NUL in passwords properlynpm WARN deprecated node-pre-gyp@0.14.0: Please upgrade to @mapbox/node-pre-gyp: the non-scoped node-pre-gyp package is deprecated and only the @mapbox scoped package will recieve updates in the futurenpm ERR! code 1npm ERR! path C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcryptnpm ERR! command failednpm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c C:\Users\park\AppData\Local\Temp\install-8386daeb.cmdnpm ERR! Failed to execute 'C:\Program Files\nodejs\node.exe C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js configure --fallback-to-build --module=C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcrypt\lib\binding\bcrypt_lib.node --module_name=bcrypt_lib --module_path=C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcrypt\lib\binding --napi_version=8 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v93' (1)npm ERR! node-pre-gyp info it worked if it ends with oknpm ERR! node-pre-gyp info using node-pre-gyp@0.14.0npm ERR! node-pre-gyp info using node@16.17.0 | win32 | x64npm ERR! node-pre-gyp WARN Using needle for node-pre-gyp https downloadnpm ERR! node-pre-gyp info check checked for "C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcrypt\lib\binding\bcrypt_lib.node" (not found)npm ERR! node-pre-gyp http GET https://github.com/kelektiv/node.bcrypt.js/releases/download/v3.0.8/bcrypt_lib-v3.0.8-node-v93-win32-x64-unknown.tar.gznpm ERR! node-pre-gyp http 404 https://github.com/kelektiv/node.bcrypt.js/releases/download/v3.0.8/bcrypt_lib-v3.0.8-node-v93-win32-x64-unknown.tar.gznpm ERR! node-pre-gyp WARN Tried to download(404): https://github.com/kelektiv/node.bcrypt.js/releases/download/v3.0.8/bcrypt_lib-v3.0.8-node-v93-win32-x64-unknown.tar.gznpm ERR! node-pre-gyp WARN Pre-built binaries not found for bcrypt@3.0.8 and node@16.17.0 (node-v93 ABI, unknown) (falling back to source compile with node-gyp)npm ERR! node-pre-gyp http 404 status code downloading tarball https://github.com/kelektiv/node.bcrypt.js/releases/download/v3.0.8/bcrypt_lib-v3.0.8-node-v93-win32-x64-unknown.tar.gznpm ERR! gyp info it worked if it ends with oknpm ERR! gyp info using node-gyp@9.0.0npm ERR! gyp info using node@16.17.0 | win32 | x64npm ERR! gyp info oknpm ERR! gyp info it worked if it ends with oknpm ERR! gyp info using node-gyp@9.0.0npm ERR! gyp info using node@16.17.0 | win32 | x64npm ERR! gyp ERR! find Python npm ERR! gyp ERR! find Python Python is not set from command line or npm configurationnpm ERR! gyp ERR! find Python Python is not set from environment variable PYTHONnpm ERR! gyp ERR! find Python checking if "python3" can be usednpm ERR! gyp ERR! find Python - "python3" is not in PATH or produced an errornpm ERR! gyp ERR! find Python checking if "python" can be usednpm ERR! gyp ERR! find Python - "python" is not in PATH or produced an errornpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python39\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python39\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python39\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python39\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python39-32\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python39-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python39-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python39-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files (x86)\Python39-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files (x86)\Python39-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python38\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python38\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python38\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python38\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python38-32\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python38-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python38-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python38-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files (x86)\Python38-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files (x86)\Python38-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python37\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python37\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python37\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python37\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python37-32\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python37-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python37-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python37-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files (x86)\Python37-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files (x86)\Python37-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python36\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python36\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python36\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python36\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Users\park\AppData\Local\Programs\Python\Python36-32\python.exenpm ERR! gyp ERR! find Python - "C:\Users\park\AppData\Local\Programs\Python\Python36-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files\Python36-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files\Python36-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if Python is C:\Program Files (x86)\Python36-32\python.exenpm ERR! gyp ERR! find Python - "C:\Program Files (x86)\Python36-32\python.exe" could not be runnpm ERR! gyp ERR! find Python checking if the py launcher can be used to find Python 3npm ERR! gyp ERR! find Python - "py.exe" is not in PATH or produced an errornpm ERR! gyp ERR! find Pythonnpm ERR! gyp ERR! find Python **********************************************************npm ERR! gyp ERR! find Python You need to install the latest version of Python.npm ERR! gyp ERR! find Python Node-gyp should be able to find and use Python. If not,npm ERR! gyp ERR! find Python you can try one of the following options:npm ERR! gyp ERR! find Python - Use the switch --python="C:\Path\To\python.exe"npm ERR! gyp ERR! find Python (accepted by both node-gyp and npm)npm ERR! gyp ERR! find Python - Set the environment variable PYTHONnpm ERR! gyp ERR! find Python - Set the npm configuration variable python:npm ERR! gyp ERR! find Python npm config set python "C:\Path\To\python.exe"npm ERR! gyp ERR! find Python For more information consult the documentation at:npm ERR! gyp ERR! find Python https://github.com/nodejs/node-gyp#installationnpm ERR! gyp ERR! find Python **********************************************************npm ERR! gyp ERR! find Pythonnpm ERR! gyp ERR! configure errornpm ERR! gyp ERR! stack Error: Could not find any Python installation to usenpm ERR! gyp ERR! stack at PythonFinder.fail (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\find-python.js:330:47)npm ERR! gyp ERR! stack at PythonFinder.runChecks (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\find-python.js:159:21)npm ERR! gyp ERR! stack at PythonFinder.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\find-python.js:228:18)npm ERR! gyp ERR! stack at PythonFinder.execFileCallback (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\find-python.js:294:16)npm ERR! gyp ERR! stack at exithandler (node:child_process:408:5)npm ERR! gyp ERR! stack at ChildProcess.errorhandler (node:child_process:420:5)npm ERR! gyp ERR! stack at ChildProcess.emit (node:events:513:28)npm ERR! gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:289:12)npm ERR! gyp ERR! stack at onErrorNT (node:internal/child_process:478:16)npm ERR! gyp ERR! stack at processTicksAndRejections (node:internal/process/task_queues:83:21)npm ERR! gyp ERR! System Windows_NT 10.0.19044npm ERR! gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "configure" "--fallback-to-build" "--module=C:\\Users\\park\\Documents\\boilerplate-mern-stack-master\\node_modules\\bcrypt\\lib\\binding\\bcrypt_lib.node" "--module_name=bcrypt_lib" "--module_path=C:\\Users\\park\\Documents\\boilerplate-mern-stack-master\\node_modules\\bcrypt\\lib\\binding" "--napi_version=8" "--node_abi_napi=napi" "--napi_build_version=0" "--node_napi_label=node-v93"npm ERR! gyp ERR! cwd C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcryptnpm ERR! gyp ERR! node -v v16.17.0api_version=8 --node_abi_napi=napi --napi_build_version=0 --node_napi_label=node-v93' (1)npm ERR! node-pre-gyp ERR! stack at ChildProcess.<anonymous> (C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\node-pre-gyp\lib\util\compile.js:83:29)npm ERR! node-pre-gyp ERR! stack at ChildProcess.emit (node:events:513:28)npm ERR! node-pre-gyp ERR! stack at maybeClose (node:internal/child_process:1093:16)npm ERR! node-pre-gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:302:5)npm ERR! node-pre-gyp ERR! System Windows_NT 10.0.19044npm ERR! node-pre-gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\park\\Documents\\boilerplate-mern-stack-master\\node_modules\\node-pre-gyp\\bin\\node-pre-gyp" "install" "--fallback-to-build"npm ERR! node-pre-gyp ERR! cwd C:\Users\park\Documents\boilerplate-mern-stack-master\node_modules\bcryptnpm ERR! node-pre-gyp ERR! node -v v16.17.0npm ERR! node-pre-gyp ERR! node-pre-gyp -v v0.14.0npm ERR! node-pre-gyp ERR! not oknpm ERR! A complete log of this run can be found in:npm ERR! C:\Users\park\AppData\Local\npm-cache\_logs\2022-09-28T10_16_33_214Z-debug-0.logPS C:\Users\park\Documents\boilerplate-mern-stack-master> 이유를 알 수 있을까요..ㅠㅠ 답변 기다리고 있습니다..ㅠㅠㅠ 처음부터 이래버려서 진도를 나갈수가 없어요 흑흑

지금 저희가 하는 코드에서7분07초쯤 expected가 1밖에 될 수 없는건가요?

안녕하세요! 강의 수강 중 질문 있어 글을 남깁니다.'교착상태의 다양한 발생 가능성' 부분을 보고 있습니다.그 중 첫 번째가 '동기 작업이 현재의 쓰레드를 필요로 하는 경우'입니다. 이 부분은 3-2 강의를 참고해서 이해를 했는데요. 아래처럼 비동기로 작업을 보냈는데, 자신을 block시킨 global queue에 할당되어 교착된 상태입니다.DispatchQueue.global().async { DispatchQueue.global().sync { ... } }두 번째가 '앞선 작업이 현재 쓰레드를 필요로 하는 경우'인데요, 생각해보니 위의 케이스를 제외하고는 마땅한 경우가 떠오르지 않아서요! 혹시 첫 번째 상황과 같은 것을 의미하는지, 제가 설명한 부분이 맞는 말인지 궁금합니다. 감사합니다! :) 

- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요.http://boj.kr/e083acd670f1478bad5c88f07da76de7복합대입연산자를 쓰면 중간에 자꾸 이상한 에러가 납니다.백준의 첫 번째 예제의 경우에도 Dev c++에서 테스트해 보면Onrxwbba Bayvar W굌tr이런 식으로 문자가 깨지는 경우가 발생합니다. 왜 이렇게 되는 건가요?

타입스크립트 질문이 있습니다. 제네릭은 코드의 재사용을 높이기 위해서, 함수를 생성할때 매개변수의 타입을 정하는 것이라고 알고 있습니다. const f =<T>(param :T):T =>{…}이렇게요.그런데 navigation을 사용하는 것과 같은 경우에는const Tab = createBottomTabNavigator<TabParamList>()와 같이 매개변수나 반환값에 TabParamList라는 타입이 사용되지 않음에도 불구하고 제네릭을 사용합니다한가지 함수를 재사용하는 목적이 없다고 볼 수 있는 것 같은데, 저기서 제네릭의 역할이 무엇인지 궁금합니다 

<Route exact path="/" element={<Home />} />위 방식으로 제가 작성하여 function Home() { console.log('>>>>> home'); return ( <div> <h2>Home</h2> </div> ); }아래처럼 로그를 주었는데 개발자도구에서 확인 시 로그가 두번씩 호출이 됩니다. 어떻게 두번이 호출 되는지와 exact 속성의 역할element={<Home />}와 element={Home()}의 차이점이 궁금합니다. 

https://www.acmicpc.net/source/49806907 Split()을 썼는데 강의를 보니 *이 한 번만 나오니 find()를 쓰면 됐을걸 그랬습니다.궁금한 점은 s.erase()로 접두사와 접미사 전까지의 문자열을 다 삭제하였기 때문에 강의에서처럼 접두사+접미사의 길이보다 작은 문자열은 배제substr은 아니지만 find를 통해 접두사/접미사가 문자열의 양 끝에 존재하는지 확인하였는데 틀렸는지 잘 모르겠습니다..백준 질문검색 기준 반례들을 다 테스트 해봐서 통과했으며 채점 10%에서 틀렸다고 나옵니다.

안녕하세요..scss 를 사용하고 있는데, @debug 가 출력이 되지 않습니다...stats: { loggingDebug: ['sass-loader']}위 구문을 webpack.config.js 에 추가하라고 해서, vue.config.js에 추가를 했습니다.그래도 콘솔에 출력이 되지 않습니다.다른 방법이 있을까요?도움을 부탁 드립니다.