我已经在GitHub页面上部署了react应用程序。
但现在我遇到了一个问题:我向服务器请求的身份验证状态没有得到任何响应。怎么了?
has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource
