Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\ScalarNode' not found in C:\xampp\htdocs\plugins\Symfony\Component\Config\Definition\BooleanNode.php:21
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\plugins\Symfony\Component\Config\Definition\BooleanNode.php on line 21