Nodejs Passportjs Reactjs CORS issue

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Dear All I am using github login for my react.js application with passport github2 strategy
**My React.js app is running on port 3000
and the Node.js server is running on port 5000**

This is error I am getting when I try to login with github, please see the screenshot


`Access to XMLHttpRequest at 'https://github.com/login/oauth/authorize?response_type=code&redirect_uri=http%3A%2F%2FXX.XX.71.24%3A5000%2Fapi%2Fv1%2Fauth%2Fgithub%2Fcallback&scope=user%3Aemail&client_id=f34f1df531540449d402' (redirected from 'http://XX.XX.71.24:3000/api/v1/auth/github') from origin 'http://XX.XX.71.24:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`

CORS is enabled on my server as other endpoints are working fine
Here is the CORS settings


this my github app setting


Start by tracing the OAuth request from the React app at port 3000 through the Node.js server at port 5000 and reviewing the shown CORS settings. Compare the GitHub OAuth authorize URL, callback URL, and GitHub app settings in the issue. Done requires identifying the cause of the blocked authorization flow and confirming that GitHub login completes without the reported browser error.

Written by the indexing model from the issue text.