diff --git a/src/main/java/com/example/whiplash/auth/service/AuthService.java b/src/main/java/com/example/whiplash/auth/service/AuthService.java
index acfebe4..15b4aca 100644
--- a/src/main/java/com/example/whiplash/auth/service/AuthService.java
+++ b/src/main/java/com/example/whiplash/auth/service/AuthService.java
@@ -79,17 +79,19 @@ public TokenResponseDTO authenticateByKakao(String code) {
 
         userRepository.save(kakaoUser);
 
+        return loginByKakao(kakaoUser);
+
         // 회원가입의 경우 임시토큰 생성
-        String tempToken = jwtTokenProvider.generateTempSocialToken(kakaoUser);
-        return AuthConverter.toTokenResponseDTO(tempToken, null, UserStatus.PENDING, LoginStatus.NEW_USER, kakaoUser.getName());
+//        String tempToken = jwtTokenProvider.generateTempSocialToken(kakaoUser);
+//        return AuthConverter.toTokenResponseDTO(tempToken, null, UserStatus.PENDING, LoginStatus.NEW_USER, kakaoUser.getName());
     }
 
     @Transactional
     public TokenResponseDTO loginByKakao(User user) {
 
-        if (user.getUserStatus() == UserStatus.PENDING || user.getUserStatus() == UserStatus.INACTIVE) {
-            throw new WhiplashException(ErrorStatus.USER_NOT_ACTIVATED);
-        }
+//        if (user.getUserStatus() == UserStatus.PENDING || user.getUserStatus() == UserStatus.INACTIVE) {
+//            throw new WhiplashException(ErrorStatus.USER_NOT_ACTIVATED);
+//        }
 
         // 모든 사용자 타입에 대해 user.getId()를 사용
         String userId = String.valueOf(user.getId());
diff --git a/src/main/java/com/example/whiplash/quiz/dto/response/MixedQuizResDto.java b/src/main/java/com/example/whiplash/quiz/dto/response/MixedQuizResDto.java
index 10d702a..8c78335 100644
--- a/src/main/java/com/example/whiplash/quiz/dto/response/MixedQuizResDto.java
+++ b/src/main/java/com/example/whiplash/quiz/dto/response/MixedQuizResDto.java
@@ -2,6 +2,7 @@
 
 import lombok.AllArgsConstructor;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.time.LocalDateTime;
 import java.util.List;
@@ -25,6 +26,7 @@ public class MixedQuizResDto {
      */
     @Data
     @AllArgsConstructor
+    @NoArgsConstructor
     public static class QuizWithTerm {
         private String question;
         private List<String> options;
diff --git a/src/main/java/com/example/whiplash/quiz/service/WeeklyChallengeService.java b/src/main/java/com/example/whiplash/quiz/service/WeeklyChallengeService.java
index 8300397..412b0ab 100644
--- a/src/main/java/com/example/whiplash/quiz/service/WeeklyChallengeService.java
+++ b/src/main/java/com/example/whiplash/quiz/service/WeeklyChallengeService.java
@@ -54,6 +54,8 @@ public WeeklyChallengeResDto getWeeklyChallenge(Long userId) {
         Optional<ChallengeAttempt> attemptOpt = challengeAttemptRepository
                 .findByUserIdAndChallengeId(userId, challenge.getId());
 
+        log.info("weekly challenge : {}", challenge.getQuizzesJson());
+
         // 4. 퀴즈 데이터 (이미 도전했으면 null)
         List<MixedQuizResDto.QuizWithTerm> quizzes = attemptOpt.isPresent()
                 ? null
@@ -266,23 +268,31 @@ private Double calculateAverageScore(Long challengeId) {
      */
     private String convertToJson(Object obj) {
         try {
-            return objectMapper.writeValueAsString(obj);
+            String json = objectMapper.writeValueAsString(obj);
+            log.debug("JSON 변환 성공: type={}, length={}", obj.getClass().getSimpleName(), json.length());
+            return json;
         } catch (JsonProcessingException e) {
-            throw new RuntimeException("JSON 변환 실패", e);
+            log.error("JSON 변환 실패: obj={}", obj, e);
+            throw new RuntimeException("JSON 변환 실패: " + e.getMessage(), e);
         }
     }
 
     private List<MixedQuizResDto.QuizWithTerm> parseQuizzesFromJson(String json) {
         try {
-            return objectMapper.readValue(
+            log.debug("JSON 파싱 시도: json={}", json);
+            List<MixedQuizResDto.QuizWithTerm> result = objectMapper.readValue(
                     json,
                     objectMapper.getTypeFactory().constructCollectionType(
                             List.class,
                             MixedQuizResDto.QuizWithTerm.class
                     )
             );
+            log.debug("JSON 파싱 성공: size={}", result.size());
+            return result;
         } catch (JsonProcessingException e) {
-            throw new RuntimeException("JSON 파싱 실패", e);
+            log.error("JSON 파싱 실패 - json 내용: {}", json, e);
+            log.error("에러 상세: {}", e.getMessage());
+            throw new RuntimeException("JSON 파싱 실패: " + e.getMessage(), e);
         }
     }