Redirect Ignoring baseUrl?

I have a next.js app, locally it all works fine but when I put it on a server with nginx for https, authentication (specifically Twitch) it redirects to localhost:3000? No matter what I do I can't point the redirect back to the SSL server. When I change stuff locally it comes up with some sort of cross origin error. I can't tell if I am missing something blatantly obvious...

Solution:

Twitch is just sucky, there is a captcha above the client ID which you need to click to enable the save button:

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