bug fix

src/modules/exam/components/ApplyContent.vue

@@ -752,8 +752,8 @@ export default {
           ? paper.name > maxExposedPaperType
           : true;
         paper.isExposed = exposedPaperTypes.includes(paper.name);
-        auditLogCache.paper[paper.attachmentId] = false;
-        auditLogCache.card[paper.cardId] = false;
+        if (paper.attachmentId) auditLogCache.paper[paper.attachmentId] = false;
+        if (paper.cardId) auditLogCache.card[paper.cardId] = false;
       });
       this.auditLogCache = auditLogCache;