Custom 403 page on faulty token

[dominch]

Hello
After installation and setup everything works great.

The problem is when user has something broken in system and can't log in via sso (to any app in network). He will get nginx built in 403 page with this module.

Same thing happens when time is not synced and every token is invalid, all sso users will get nginx 403 page. I tried to reconfigure that to my own page - I still have AD connected login form accessible on specified page and would like to redirect there (or just display link to it).

Is there any way to reconfigure module to use build in nginx directives for error pages?
Or maybe there is some special one?
I've always get ugly 403 from nginx and can't insert there anything like simple link.