想通过Laya.loader.load加载一个第三方的头像图片，但是提示跨域不能加载，错误如下，请问如何处理？
Access to Image at 'http://tva2.sinaimg.cn/crop.0.0.180.180.50/***.jpg' from origin 'http://***.sina.com.cn' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://***.sina.com.cn' is therefore not allowed access.
