Fatal error: Uncaught Error: Class "PhpParser\ParserAbstract" not found in E:\xampp\htdocs\stms\vendor\nikic\php-parser\lib\PhpParser\Parser\Php7.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\nikic\php-parser\lib\PhpParser\Parser\Php7.php on line 19