[PR] 修复因跨域限制无法登录的问题

[AlbertGithubHome]

Access to XMLHttpRequest at ‘http://127.0.0.1:3000/socket.io/?EIO=3&transport=polling&t=OyAd7iL’ from origin ‘http://127.0.0.1:8080’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
GET http://127.0.0.1:3000/socket.io/?EIO=3&transport=polling&t=OyAd7iL net::ERR_FAILED 400 (Bad Request)

修复之前提示【连接服务器失败！】，F12查看源码发现js报错，该提交用于修改这个问题

[hcwstar]

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