Got the error after not interact with login page for a while

When I go to Auth0 login page and not interact with the page for 15 mins, then I sign in / sign up and it will be redirected to /login/callback and show the message like

Oops!, something went wrong

There could be a misconfiguration in the system or a service outage. We track these errors automatically, but if the problem persists feel free to contact us.
Please try again.

and got the status code 403 Forbidden for callback.

Also, the log in Auth0 dashboard shown this description:

Password login via OIDC-conformant clients with externally-hosted login pages is unsupported. Alternatively, login could have been initiated from the wrong place (e.g., a bookmark).