토큰 생성강의 코드 실행 문의

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/oauthdb?useSSL=false
    username: root
    password: jinwook219
  jpa:
    database: mysql
    #    InnoDB??
    database-platform: org.hibernate.dialect.MySQL8Dialect
    generate-ddl: true
    hibernate:
      ddl-auto: create
    show_sql: true
  jwt:
    #   32글자 이상 인코딩된 문자열 : oauthserversecretaccesstokenoauthserversecretaccesstokenoauthserversecretaccesstoken
    secret: b2F1dGhzZXJ2ZXJzZWNyZXRhY2Nlc3N0b2tlbm9hdXRoc2VydmVyc2VjcmV0YWNjZXNzdG9rZW5vYXV0aHNlcnZlcnNlY3JldGFjY2Vzc3Rva2Vu
    expiration: 3000 #분단위

package com.example.oauth.auth;


import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.crypto.spec.SecretKeySpec;
import java.security.Key;
import java.util.Date;

@Component
public class JwtTokenProvider {
    private final String secretKey;
    private final int expiration;
    private Key SECRET_KEY;

    public JwtTokenProvider(@Value("${jwt.secret}") String secretKey, @Value("${jwt.expiration}") int expiration) {
        this.secretKey = secretKey;
        this.expiration = expiration;
        this.SECRET_KEY = new SecretKeySpec(java.util.Base64.getDecoder().decode(secretKey), SignatureAlgorithm.HS512.getJcaName());
    }

    public String createToken(String email, String role){
//        claims는 jwt토큰의 payload부분을 의미
        Claims claims = Jwts.claims().setSubject(email);
        claims.put("role", role);
        Date now = new Date();
        String token = Jwts.builder()
                .setClaims(claims)
                .setIssuedAt(now)
                .setExpiration(new Date(now.getTime()+ expiration*60*1000L))
                .signWith(SECRET_KEY)
                .compact();
        return token;
    }
}

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2025-04-29T00:35:55.742+09:00 ERROR 3891 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtTokenProvider' defined in file [/Users/macforjinwook/Desktop/oauth/build/classes/java/main/com/example/oauth/auth/JwtTokenProvider.class]: Unexpected exception during bean creation
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:536) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:347) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.instantiateSingleton(DefaultListableBeanFactory.java:1155) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingleton(DefaultListableBeanFactory.java:1121) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:1056) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:987) ~[spring-context-6.2.5.jar:6.2.5]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:627) ~[spring-context-6.2.5.jar:6.2.5]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:318) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1361) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1350) ~[spring-boot-3.4.4.jar:3.4.4]
	at com.example.oauth.OauthApplication.main(OauthApplication.java:10) ~[main/:na]
Caused by: org.springframework.util.PlaceholderResolutionException: Could not resolve placeholder 'jwt.secret' in value "${jwt.secret}"
	at org.springframework.util.PlaceholderResolutionException.withValue(PlaceholderResolutionException.java:81) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.util.PlaceholderParser$ParsedValue.resolve(PlaceholderParser.java:423) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.util.PlaceholderParser.replacePlaceholders(PlaceholderParser.java:128) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:118) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:114) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:255) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:226) ~[spring-core-6.2.5.jar:6.2.5]
	at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:201) ~[spring-context-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:971) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1577) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1555) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:240) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1381) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1218) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:563) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) ~[spring-beans-6.2.5.jar:6.2.5]
	... 16 common frames omitted


종료 코드 1(으)로 완료된 프로세스

Caused by: org.springframework.util.PlaceholderResolutionException: Could not resolve placeholder 'jwt.secret' in value "${jwt.secret}"

이 부분을 보면 yml에 있는 jwt.secret을 인식 못하는 것 같은데 원인을 못 찾겠습니다 강사님 깃허브 코드를 붙혀넣어봐도 왜 이런지 잘 모르겠습니다. 혹시 이런 경우에는 어떤 것을 찾아봐야하나요??