( ! ) Deprecated: Symfony\Component\Security\Core\Exception\LogoutException::__construct(): Implicitly marking parameter $previous as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\security-core\Exception\LogoutException.php on line 21

( ! ) Fatal error: Uncaught Error: Class "Symfony\Component\Security\Core\Exception\RuntimeException" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\security-core\Exception\LogoutException.php on line 19
( ! ) Error: Class "Symfony\Component\Security\Core\Exception\RuntimeException" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\security-core\Exception\LogoutException.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0012	366952	{main}( )	...\LogoutException.php:0