( ! ) Deprecated: Symfony\Bundle\SwiftmailerBundle\DataCollector\MessageDataCollector::collect(): Implicitly marking parameter $exception as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\swiftmailer-bundle\DataCollector\MessageDataCollector.php on line 42

( ! ) Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DataCollector\DataCollector" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\swiftmailer-bundle\DataCollector\MessageDataCollector.php on line 26
( ! ) Error: Class "Symfony\Component\HttpKernel\DataCollector\DataCollector" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\swiftmailer-bundle\DataCollector\MessageDataCollector.php on line 26
Call Stack
#	Time	Memory	Function	Location
1	0.0027	394952	{main}( )	...\MessageDataCollector.php:0