Our oauth authentication was working without incident over the past few weeks, today, when we try to redirect back to chatgpt for our oauth, it shows the following message:
I guess you’re facing the same issue that I described and solved here: [BUG OAUTH] - Missing state parameters in dev mode only since yesterday - #2 by kevinpiac
Hope it helps 
Thanks @kevinpiac, this new requirement as of 7/12/23 should be called out. If the redirect to chatgpt
https://chat.openai.com/aip/<plugin-id>/oauth/callback?client_id=<client-id>&response_type=code&code=<client-generated-code>&state=<from-chatgpt-initial-call>
does not include state oauth callback from chatgpt is never triggered – applies to plugin development, unsure if this behavior is also enabled in prod.
