error/auth shibboleth/auth shib error login
From MoodleDocs
The authentication method is preventing that every Shibboleth user can access your Moodle site. The user record must be in Moodle database in order to authenticate successfully.
Note: This documentation is for Moodle 2.7. For up-to-date documentation see error/auth shibboleth/auth shib error login.
