add if

smarketing-java/marketing-content/src/main/java/com/won/smarketing/content/application/service/SnsContentService.java

@@ -44,8 +44,10 @@ public class SnsContentService implements SnsContentUseCase {
     @Transactional
     public SnsContentCreateResponse generateSnsContent(SnsContentCreateRequest request, List<MultipartFile> files) {
         //파일들 주소 가져옴
+        if(files != null) {
             List<String> urls = blobStorageService.uploadImage(files, "containerName");
             request.setImages(urls);
+        }
 
         // AI를 사용하여 SNS 콘텐츠 생성
         String content = aiContentGenerator.generateSnsContent(request);