[Resolved] "We got a critical error" for oauth2 endpoint

Hello everyone

Today I started receiving the following error:

500 Internal Server Error "We got a critical error"

For the following endpoint:

POST https://login.microsoftonline.com/common/oauth2/v2.0/token

Form data:

client_id = my bot client id

client_secret = my bot client secret

code = code from MS

grant_type = authorization_code

redirect_uri = my redirect URI

This is only failing for one of my bots, and it is working for others (same setup on all of them). The weird thing is, it works when I try it in Postman with the same parameters.

Does anyone know what the error even means, I've never seen it before? Could it be that the IP is restricted or something like that?

Thanks!

Edit: it looks like a deployment issue on one of the environments. Resolved.