Feature Request: Fallback URL for Failed Authentication using Auth0

[KevinRohn]

Description

Currently, when authentication fails or when a user is not yet approved in the system, they are redirected to a blank page that displays the error message: Error: Could not fetch token from Auth0

Feature Request

I would like to request the ability to specify a fallback URL to which users would be redirected in case of authentication failures.

The fallback URL should be configurable in the Auth0 integration settings