Fatal error: Uncaught Error: Class 'Doctrine\Common\Lexer\AbstractLexer' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Lexer.php:32 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Lexer.php on line 32