Fatal error: Uncaught Error: Class 'Doctrine\Common\Lexer\AbstractLexer' not found in C:\xampp\htdocs\portal\vendor\doctrine\annotations\lib\Doctrine\Common\Annotations\DocLexer.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\portal\vendor\doctrine\annotations\lib\Doctrine\Common\Annotations\DocLexer.php on line 21