전 실패뜨는데 왜 성공이 안뜨는가요?

com.example.chatting_video을 이름 바꾸는 것도 알려주세요.
example 대신에 제 아이디 tkhpsch 쓰고 싶은데 안되네요.
어떻게 성공했는지 알고 싶어요. Log.d에서 Log 임포트가 안되는데요?

package com.example.chatting_video

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import com.google.firebase.auth.FirebaseAuth
import kotlinx.android.synthetic.main.activity_main.*
import android.util.Log as Log
import kotlinx.android.synthetic.main.activity_main.login_button_main as login_button_main


class MainActivity : AppCompatActivity() {

    private lateinit var auth: FirebaseAuth// ...

    private val TAG: String = MainActivity::class.java.simpleName


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        auth = FirebaseAuth.getInstance()

        auth.createUserWithEmailAndPassword("tkhpsch@gmail.com", "123123")
            .addOnCompleteListener(this) { task ->
                if (task.isSuccessful) {
                    // Sign in success, update UI with the signed-in user's information

                    Log.d(TAG, "성공")

                } else {

                    Log.d(TAG, "실패")


                }
            }

        login_button_main.setOnClickListener {

            val intent = Intent(this, LoginActivity::class.java)
            startActivity(intent)
        }



        }


    }










04/26 10:18:54: Launching 'app' on Pixel_3a_API_30_x86.
Install successfully finished in 630 ms.
$ adb shell am start -n "com.example.chatting_video/com.example.chatting_video.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 11589 on device 'Pixel_3a_API_30_x86 [emulator-5554]'.
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
W/ComponentDiscovery: Class com.google.firebase.dynamicloading.DynamicLoadingRegistrar is not an found.
I/FirebaseApp: Device unlocked: initializing all Firebase APIs for app [DEFAULT]
I/DynamiteModule: Considering local module com.google.android.gms.measurement.dynamite:48 and remote module com.google.android.gms.measurement.dynamite:13
    Selected local version of com.google.android.gms.measurement.dynamite
I/FirebaseInitProvider: FirebaseApp initialization successful
D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so
I/FirebaseAuth: [FirebaseAuth:] Preparing to create service connection to fallback implementation
V/FA: onActivityCreated
W/.chatting_vide: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
W/.chatting_vide: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
V/FA: App measurement collection enabled
V/FA: App measurement enabled for app package, google app id: com.example.chatting_video, 1:29337236477:android:aa8b18060dba662ba25f94
I/FA: App measurement initialized, version: 39065
    To enable debug logging run: adb shell setprop log.tag.FA VERBOSE
    To enable faster debug mode event logging run:
      adb shell setprop debug.firebase.analytics.app com.example.chatting_video
D/FA: Debug-level message logging enabled
V/FA: Connecting to remote service
V/FA: Connection attempt already in progress
V/FA: Connection attempt already in progress
V/FA: Activity resumed, time: 16001157
I/FA: Tag Manager is not found and thus will not be used
D/HostConnection: HostConnection::get() New Host Connection established 0xefdad110, tid 11639
D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_vulkan_free_memory_sync ANDROID_EMU_vulkan_shader_float16_int8 ANDROID_EMU_vulkan_async_queue_submit GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_host_side_tracing ANDROID_EMU_async_frame_commands ANDROID_EMU_gles_max_version_3_0 
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
D/EGL_emulation: eglCreateContext: 0xefdaca80: maj 3 min 0 rcv 3
D/EGL_emulation: eglMakeCurrent: 0xefdaca80: ver 3 0 (tinfo 0xf00fa290) (first time)
V/FA: Connection attempt already in progress
V/FA: Connection attempt already in progress
I/Gralloc4: mapper 4.x is not supported
D/HostConnection: createUnique: call
D/HostConnection: HostConnection::get() New Host Connection established 0xefdac770, tid 11639
D/goldfish-address-space: allocate: Ask for block of size 0x100
D/goldfish-address-space: allocate: ioctl allocate returned offset 0x3fdef0000 size 0x2000
D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_vulkan ANDROID_EMU_deferred_vulkan_commands ANDROID_EMU_vulkan_null_optional_strings ANDROID_EMU_vulkan_create_resources_with_requirements ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer ANDROID_EMU_vulkan_ignored_handles ANDROID_EMU_vulkan_free_memory_sync ANDROID_EMU_vulkan_shader_float16_int8 ANDROID_EMU_vulkan_async_queue_submit GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_host_side_tracing ANDROID_EMU_async_frame_commands ANDROID_EMU_gles_max_version_3_0 
W/System: Ignoring header X-Firebase-Locale because its value was null.
D/FA: Connected to remote service
V/FA: Processing queued up service tasks: 5
D/MainActivity: 실패
V/FA: Inactivity, disconnecting from the service