Fatal error: Uncaught Error: Interface 'Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface' not found in /home/phprplacein/public_html/vendor/symfony/security-core/Authentication/SimplePreAuthenticatorInterface.php:21 Stack trace: #0 {main} thrown in /home/phprplacein/public_html/vendor/symfony/security-core/Authentication/SimplePreAuthenticatorInterface.php on line 21