src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt

@@ -253,6 +253,7 @@ class CreatorAdminContentSeriesService(
         val series = repository.findByIdAndCreatorId(id = request.seriesId, creatorId = memberId)
             ?: throw SodaException("잘못된 접근입니다.")
 
-        series.contentList.removeIf { it.content!!.id == request.contentId }
+        val removeContentList = series.contentList.filter { it.content!!.id == request.contentId }
+        series.contentList.removeAll(removeContentList)
     }
 }