img-error

const errorImg ='base64字符串'; //因为base64字符串较长所以简写
    window.addEventListener(
      "error",
      function (event) {
        const target = event.target;
        if (target instanceof HTMLImageElement) {
          target.src = errorImg;
          console.log("图片加载异常", target);
        }
      },
      true
    );