diff --git a/cider-api/build.gradle b/cider-api/build.gradle
index ff41e2f..1101848 100644
--- a/cider-api/build.gradle
+++ b/cider-api/build.gradle
@@ -58,6 +58,13 @@ dependencies {
     annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties['querydsl.version']}:jakarta"
     annotationProcessor "jakarta.annotation:jakarta.annotation-api"
     annotationProcessor "jakarta.persistence:jakarta.persistence-api"
+
+    configurations.all {
+        resolutionStrategy {
+            force 'org.hibernate.bytecode:hibernate-bytecode:6.1.7.Final'
+            force 'net.bytebuddy:byte-buddy-dep:1.10.9'
+        }
+    }
 }
 
 jar{
diff --git a/cider-api/src/main/java/com/cmc/domains/certify/dto/response/SimpleCertifyResponseDto.java b/cider-api/src/main/java/com/cmc/domains/certify/dto/response/SimpleCertifyResponseDto.java
index 301ef50..76a3f99 100644
--- a/cider-api/src/main/java/com/cmc/domains/certify/dto/response/SimpleCertifyResponseDto.java
+++ b/cider-api/src/main/java/com/cmc/domains/certify/dto/response/SimpleCertifyResponseDto.java
@@ -46,10 +46,15 @@ public class SimpleCertifyResponseDto {
 
     public static SimpleCertifyResponseDto from(Certify certify) {
 
+        String url = "";
+        if(certify.getCertifyImageList().size() != 0){
+            url =  certify.getCertifyImageList().get(0).getImageUrl();
+        }
+
         return new SimpleCertifyResponseDtoBuilder()
                 .simpleMemberResponseDto(SimpleMemberResponseDto.from(certify.getParticipate().getMember()))
                 .certifyId(certify.getCertifyId())
-                .certifyImageUrl(certify.getCertifyImageList().get(0).getImageUrl())
+                .certifyImageUrl(url)
                 .createdDate(certify.getCreatedDate())
                 .certifyName(certify.getCertifyName())
                 .certifyContent(certify.getCertifyContent())
@@ -60,10 +65,15 @@ public static SimpleCertifyResponseDto from(Certify certify) {
 
     public static SimpleCertifyResponseDto from(Certify certify, Boolean isLike) {
 
+        String url = "";
+        if(certify.getCertifyImageList().size() != 0){
+            url =  certify.getCertifyImageList().get(0).getImageUrl();
+        }
+
         return new SimpleCertifyResponseDtoBuilder()
                 .simpleMemberResponseDto(SimpleMemberResponseDto.from(certify.getParticipate().getMember()))
                 .certifyId(certify.getCertifyId())
-                .certifyImageUrl(certify.getCertifyImageList().get(0).getImageUrl())
+                .certifyImageUrl(url)
                 .createdDate(certify.getCreatedDate())
                 .certifyName(certify.getCertifyName())
                 .certifyContent(certify.getCertifyContent())
diff --git a/cider-api/src/main/java/com/cmc/domains/challenge/controller/ChallengeController.java b/cider-api/src/main/java/com/cmc/domains/challenge/controller/ChallengeController.java
index 753dcc0..a84ddb0 100644
--- a/cider-api/src/main/java/com/cmc/domains/challenge/controller/ChallengeController.java
+++ b/cider-api/src/main/java/com/cmc/domains/challenge/controller/ChallengeController.java
@@ -256,9 +256,13 @@ public ResponseEntity<ChallengeDetailFeedResponseDto> getChallengeDetailFeed(Htt
         Challenge challenge = challengeService.getChallenge(challengeId);
         List<Certify> certifies = certifyService.getChallengeCertifyList(challenge, filter);
 
-        List<String> certifyImageUrlList = certifies.stream().map(certify -> {
-            return certify.getCertifyImageList().get(0).getImageUrl();
-        }).toList();
+        List<String> certifyImageUrlList = new ArrayList<>();
+
+        for(Certify certify : certifies){
+            if(certify.getCertifyImageList().size() != 0){
+                certifyImageUrlList.add(certify.getCertifyImageList().get(0).getImageUrl());
+            }
+        }
 
         List<SimpleCertifyResponseDto> certifyResponseDtos = new ArrayList<>();
         if (tokenString == null || tokenString.isEmpty()) {     // 로그인 x
diff --git a/cider-api/src/main/java/com/cmc/domains/challenge/dto/response/detail/ChallengeDetailResponseDto.java b/cider-api/src/main/java/com/cmc/domains/challenge/dto/response/detail/ChallengeDetailResponseDto.java
index 2f1fb2c..626a824 100644
--- a/cider-api/src/main/java/com/cmc/domains/challenge/dto/response/detail/ChallengeDetailResponseDto.java
+++ b/cider-api/src/main/java/com/cmc/domains/challenge/dto/response/detail/ChallengeDetailResponseDto.java
@@ -6,7 +6,7 @@
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
-import org.modelmapper.internal.bytebuddy.build.Plugin;
+
 
 @Data
 @Builder