Deprecated: Symfony\Component\Mailer\EventListener\MessageListener::__construct(): Implicitly marking parameter $headers as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\EventListener\MessageListener.php on line 46

Deprecated: Symfony\Component\Mailer\EventListener\MessageListener::__construct(): Implicitly marking parameter $renderer as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\EventListener\MessageListener.php on line 46

Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\EventListener\MessageListener.php:28 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\EventListener\MessageListener.php on line 28