fix: [PWT-98] [front] Footer > ZH-TW 게임 이용 등급 팝업 노출 오류

layers/components/layouts/Footer.vue

@@ -278,14 +278,22 @@ const useGameRating = computed<boolean>(() => {
 
 ///local/template/common/grades_age
 const getGameRatingImage = computed((): { type: string, image: string } => {
-  const contentInfo = footerData.value?.game_rating_info?.rating_type
-  
-  // 문자열이 아닌 경우 빈 문자열 반환
-  if (!contentInfo || typeof contentInfo !== 'string') {
+  // 안전하게 rating_type 값 확인
+  if (
+    !footerData.value?.game_rating_info?.rating_type ||
+    typeof footerData.value.game_rating_info.rating_type !== 'string'
+  ) {
     return { type: '', image: '' }
   }
   
+  const contentInfo = footerData.value.game_rating_info.rating_type
   const ratingType = contentInfo.trim()
+  
+  // 빈 문자열인 경우 처리
+  if (!ratingType) {
+    return { type: '', image: '' }
+  }
+  
   const ageTypeMap: Record<string, string> = {
     '6': 'Type6',
     '12': 'Type12',
@@ -309,6 +317,14 @@ const getGameRatingImage = computed((): { type: string, image: string } => {
 })
 
 const getContentInfoImage = computed((): string[] => {
+  // 안전하게 content_info 값 확인
+  if (
+    !footerData.value?.game_rating_info?.content_info ||
+    typeof footerData.value.game_rating_info.content_info !== 'string'
+  ) {
+    return []
+  }
+
   const contentInfo = footerData.value.game_rating_info.content_info.split(',')
   contentInfo.pop()