( ! ) Deprecated: Symfony\Component\Config\Definition\Builder\BooleanNodeDefinition::__construct(): Implicitly marking parameter $parent as nullable is deprecated, the explicit nullable type must be used instead in E:\Program_Files\wamp64\www\print\vendor\symfony\config\Definition\Builder\BooleanNodeDefinition.php on line 27

( ! ) Fatal error: Uncaught Error: Class "Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\config\Definition\Builder\BooleanNodeDefinition.php on line 22
( ! ) Error: Class "Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition" not found in E:\Program_Files\wamp64\www\print\vendor\symfony\config\Definition\Builder\BooleanNodeDefinition.php on line 22
Call Stack
#	Time	Memory	Function	Location
1	0.0014	370400	{main}( )	...\BooleanNodeDefinition.php:0