update

src/views/classes/completion-detail.vue

@@ -91,7 +91,7 @@ export default {
         let allAnswer = _.cloneDeep(ansres.data);
         allAnswer = _.uniqBy(allAnswer, 'studentid');
         let naa = _.flatten(allAnswer.map(i => i.answers)).map(i => {
-          i.answer = JSON.parse(i.answer);
+          if (i.answer) i.answer = JSON.parse(i.answer);
           return i;
         });
         //统计