img vue动态绑定图片报404解决办法

              <el-image
                 class="topbox_img"
                :src="imageUrl"
                @error="imgError"
                fit="fill"
              ></el-image>

imgError(){
       let images = event.srcElement;
      images .src = require('@/assets/images/首页切图/orchard.jpg');
      images .onerror = null; //防止闪图

    }