Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Authenticator\AbstractAuthenticator" not found in /home/ldt/public_html/canvas/udoit/src/Security/SessionAuthenticator.php:24 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/src/Security/SessionAuthenticator.php on line 24