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: You are currently viewing documentation for Moodle 3.9. Up-to-date documentation for the latest stable version of Moodle may be available here: error/auth shibboleth/auth shib error login.