Deprecated: Symfony\Component\EventDispatcher\ImmutableEventDispatcher::dispatch(): Implicitly marking parameter $eventName as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php on line 31

Deprecated: Symfony\Component\EventDispatcher\ImmutableEventDispatcher::getListeners(): Implicitly marking parameter $eventName as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php on line 71

Deprecated: Symfony\Component\EventDispatcher\ImmutableEventDispatcher::hasListeners(): Implicitly marking parameter $eventName as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php on line 87

Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventDispatcherInterface" not found in C:\Apache24\htdocs\BookStack\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php:19 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\BookStack\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php on line 19