Authentication plugin userkey not found.
- line 3840 of /lib/moodlelib.php: call to debugging()
- line 3791 of /lib/moodlelib.php: call to get_enabled_auth_plugins()
- line 109 of /auth/classes/output/login.php: call to is_enabled_auth()
- line 378 of /login/index.php: call to core_auth\output\login->__construct()
