解决elementui上传组件el-upload无法第二次上传问题

<el-upload class="upload-demo" ref="upload" drag action="" :limit="1" accept=".csv" :show-file-list="false" :before-upload="onClickCsvBeforeupload">
    <i class="el-icon-upload"></i>
    <div class="el-upload__text">点这，或者拖到着</em></div>
</el-upload>

this.$children[0].$children[0].$refs.upload.clearFiles();

  this.$confirm(`${response.msg},是否继续？`, '提示', {
          confirmButtonText: 确定,
          cancelButtonText: 取消,
          type: 'warning'
        }).then((res) => {
            // 直接提交会无响应
         this.$refs.upload.submit();
          
          }).catch(() => {})

 this.$refs["upload"].clearFiles()

  this.$confirm(`${response.msg},是否继续？`, '提示', {
          confirmButtonText: 确定,
          cancelButtonText: 取消,
          type: 'warning'
        }).then((res) => {
            // 先删除
          this.$refs["upload"].clearFiles()
          this.$nextTick(() => {
            // 再导入
            this.$refs["upload"].handleStart(this.fileList[0].raw)
            this.isUpdateSupport = 1
            // 再提交上传
            this.$refs.upload.submit();
          })
          
          }).catch(() => {})

User-agent: *
Disallow: /