Fatal error: Uncaught Error: Interface 'Symfony\Component\CssSelector\Parser\ParserInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\css-selector\Parser\Shortcut\EmptyStringParser.php:32 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\css-selector\Parser\Shortcut\EmptyStringParser.php on line 32