组件中多个el-upload存在导致上传图片失效的问题及解决

<avue-crud :option="configOption" :data="formData.configDetails">
   <template slot="coverImg" slot-scope="scope">
      <el-upload
         class="avatar-uploader"
         accept="image/*"
         :http-request="(param) => uploadImage(param, scope.row)"
         action="～～"
         :limit="1"
         :ref="'coverPicUpload' + scope.row.$index"
         :show-file-list="false"
         :before-upload="beforeUpload"
       >
         <el-image
            style="width: 300px; height: 150px"
            fit="contain"
            v-if="scope.row.picUrl"
            :src="scope.row.picUrl"
         >
         </el-image>
         <i v-else class="el-icon-plus avatar-uploader-icon"></i>
       </el-upload>
       <div style="color:red;">图片格式: jpg/gif  图片尺寸: 1920X1080</div>
   </template>
  </avue-crud>

    //上传封面图片
    uploadImage(param, row) {
      
      ....执行上传的方法，上传成功后执行下行代码
      this.$refs['coverPicUpload'+row.$index].clearFiles()
    },

<el-form-item v-if="updateInit" label="配置详情:" prop="configDetails">
  <avue-crud :option="configOption" :data="formData.configDetails">
   <template slot="coverImg" slot-scope="scope">
      <el-upload
         class="avatar-uploader"
         accept="image/*"
         :http-request="(param) => uploadImage(param, scope.row)"
         action="～～"
         :limit="1"
         :ref="'coverPicUpload' + scope.row.$index"
         :show-file-list="false"
         :before-upload="beforeUpload"
       >
         <el-image
            style="width: 300px; height: 150px"
            fit="contain"
            v-if="scope.row.picUrl"
            :src="scope.row.picUrl"
         >
         </el-image>
         <i v-else class="el-icon-plus avatar-uploader-icon"></i>
       </el-upload>
       <div style="color:red;">图片格式: jpg/gif  图片尺寸: 1920X1080</div>
   </template>
  </avue-crud>
</el-form-item>

    // 新增配置
    addConfig() {
      this.updateInit = false
      
      this.formData.configDetails.push({
        title: "",
        picKey: "",
        picUrl: "",
      });
      this.$nextTick(() => {
        this.updateInit = true
      })
    },