Fatal error: Uncaught Error: Class "PhpCsFixer\AbstractFixer" not found in I:\www\frameworks\Symfony\doctrine\vendor\friendsofphp\php-cs-fixer\src\Fixer\FunctionNotation\UseArrowFunctionsFixer.php:30 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\friendsofphp\php-cs-fixer\src\Fixer\FunctionNotation\UseArrowFunctionsFixer.php on line 30