Hey we are trying to use Ory Hydra with Kratos in combination via the ory network (essential plan). But if we authorised the application we get an "An internal server error occurred, please contact the system administrator" after we accept the consent.

{
  "error": {
    "Ory\\Kratos\\Client\\Model\\FlowError": {
      "created_at": "2023-04-19T14:41:38+00:00",
      "error": {
        "code": 500,
        "debug": "400 Bad Request",
        "details": {
          "oauth2_error_hint": "",
          "status_code": 400
        },
        "message": "An internal server error occurred, please contact the system administrator",
        "reason": "Unable to accept OAuth 2.0 Login Challenge.",
        "status": "Internal Server Error"
      },
      "id": "02da5566-0bf9-4b13-8d06-86196ddc1f6c",
      "updated_at": "2023-04-19T14:41:38+00:00"
    }
  }
}

As far as i can see, this error message gets triggered by kratos if it can't reach hydra. https://github.com/ory/kratos/blob/a046778f0a133c54f106b8edf927ca3521d9a330/hydra/hydra.go#L107 Is this a bug or do we misconfigured something?

I had a look in the logs, this is what hydra says:

Field 'subject' does not match subject from previous authentication

and why it returns a 400 on the PUT

/admin/oauth2/auth/requests/login/accept

@stocky-king-5626 @famous-art-85498 can you help with logs here please?

sorry I was too fast 😉

Ah clearing all cookies, helped. But it's a little bit weird. 🤔

you mean the error message or that it happens at all? I think it should not be an internal server error...

I mean that it happend. I just logout and clear all cookies and then tried again and then it worked. This was the solution in this thread: https://community.ory.sh/t/subject-from-payload-does-not-match-subject-from-previous-authentication/1192/4 Not sure if i can reproduce it. I try to remember and right down what are the steps to face this issue and fill a bug ticket. Thanks for the fast response. PS: Would be cool to see the logs, as a customer, too 🙂

yes we are working on exposing logs and all other kinds of events

Will try my best. 🙂