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Access to XMLHttpRequest at 'http://ttapi.research.itcast.cn/socket.io/?EIO=4&transport=polling&t=NeiIwF6' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
GET http://ttapi.research.itcast.cn/socket.io/?EIO=4&transport=polling&t=NeiItdF net::ERR_FAILED
一直在报错
The text was updated successfully, but these errors were encountered:
一直在报错
The text was updated successfully, but these errors were encountered: