Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition' not found in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\symfony\config\Definition\Builder\NumericNodeDefinition.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\symfony\config\Definition\Builder\NumericNodeDefinition.php on line 21