Found this when trying to set up syndication via Brid.gy to my Mastodon account. For me solution was to increase proxy buffers in Nginx as per https://github.com/doorkeeper-gem/doorkeeper/issues/1554#issuecomment-1304606633
Reply to 'reproducible HTTP 502 error in OAuth /oauth/authorize · mastodon/mastodon'
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reproducible HTTP 502 error in OAuth /oauth/authorize · Issue #12915 · mastodon/mastodon Hi all! I keep hitting a 502 in /oauth/authorize in 3.0.1. Is this a known issue? Here are the steps to reproduce: Create an app, eg: POST https://mastodon.technology/api/v1/apps client_name=Bridgy...
