"error_uri is null", An internal server error occurred

Error from Microsoft.AspNetCore.Authentication.OpenIdConnect.OpenIdConnectHandler: “developer.signicat. io/errors#internal-system-error An internal server error occurred” with message:
“Message contains error: ‘“sp:authsolution:internal-error”’, error_uri: ‘“error_uri is null”’.”

I cannot seem to locate where this error_uri is supposed to be set. Is this to be configured in my asp.net core application, or in the signicat dashboard?

As far as I can tell the OpenID Connect middleware in my asp.net core app is expecting an error uri to be returned in the error response, but this seems then not to be present.

Can anyone help?

-Thanks

Anything you can reply with? The error is still there when cancelling an authentication request.

error code: IDP-3200
error message: Authentication with IdP ‘nbid’ was aborted, most likely because the end-user cancelled the authentication.

Using asp.net core with OpenIdConnect and handling the event OnRemoteFaliure() does not help either. The error is thrown prior to the event being handled.

Please help out.