bug1894 上传超大图片bug

src/components/preTreat/PubIndeptQa.vue

@@ -378,6 +378,7 @@
           this.form.region13 = '{imageUrlPrefix}'+response.data.url;
           this.sendData();
         }else{
+          this.imgList = [];
           this.showFileList=false;
           this.warning(response.msg);
         }