Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /var/www/crm_killing_ninja/vendor/scheb/2fa-bundle/Security/TwoFactor/Event/TwoFactorAuthenticationEvent.php:14 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/scheb/2fa-bundle/Security/TwoFactor/Event/TwoFactorAuthenticationEvent.php on line 14