增加答案不存在的判断

src/components/DialogWrap.vue

@@ -253,7 +253,7 @@ export default defineComponent({
 
     const list = props.list.map((item, index) => {
       return {
-        answer: replaceCode(item.answer, index),
+        answer: item.answer && replaceCode(item.answer, index),
         question: item.question,
         // 如果有引用
         reference: (item.reference && item.reference.chunks && item.reference.doc_aggs) ? item.reference.doc_aggs.map(reference => {
@@ -275,7 +275,6 @@ export default defineComponent({
         })[0] : null,
       }
     });
-    console.log('list', list)
 
     const dialogList = reactive(list || []);
     const randomKey = ref(0);