Deprecated: Symfony\Component\Mailer\Test\Constraint\EmailCount::__construct(): Implicitly marking parameter $transport as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\Test\Constraint\EmailCount.php on line 23

Fatal error: Uncaught Error: Class "PHPUnit\Framework\Constraint\Constraint" not found in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\Test\Constraint\EmailCount.php:17 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\BookStack\vendor\ssddanbrown\symfony-mailer\Test\Constraint\EmailCount.php on line 17