只需要在img标签上加上 crossorigin="anonymous" 即可解决

<img crossorigin="anonymous" :src="info.weappQrCode" alt="" style="border-radius: 50%;">

备用方法：

自定义方法：
getImageFromUrl() {
    let url = this.info.weappQrCode
    return axios({
        url,
        method: 'get',
        responseType: 'blob'
    }).then(response => {
        const fileReader = new FileReader();
        fileReader.readAsDataURL(response.data);
        return new Promise(resolve => {
            fileReader.onload = () => {
            const base64Data = fileReader.result;
            resolve(base64Data);
        };
    });
  });
}

然后使用方法：

let base64 = await this.getImageFromUrl(this.info.weappQrCode)
//将原来图片地址的字段替换为这个base64 就行
//然后再尝试html2canvas