LDAP Login with phhp 8.2 throws Error 500

[hartundweich]

I'm using this framework now since 2019.
Today I tried to update php from 7.4 to 8.2
Everything is working except LDAP Authentication. If I put wrong credentials in the login fields I get a Error 500 and throwing "LDAP connection failure" from fatfree Framework.
I debugged a little bit and recognized that ldap_bind() in lib/auth.php is throwing an error except returning false.

What can I do to suppress this error 500?

Thanks for your time to give a little hint...

Best
Andreas

[hartundweich]

I'm a little bit further...
Maybe it would be better to split Auth Class LDAP Function in some parts to check if LDAP is configured correctly:

1.) Check if LDAP host can be reached - if not: throw Error 500
2.) Check if given credentials from config work to connect to LDAP host - if not: throw Error 500
3.) Check if given login from login form is working: if not - show error message and return to login form

Point 3 can onyl be achived if we do not run this line in auth.php
user_error(self::E_LDAP,E_USER_ERROR);

To solve my problem at the moment I replaced the line above by
return false;