Fatal error: Uncaught Error: Class 'Doctrine\Common\Lexer\AbstractLexer' not found in /home/demoinvfsanz/public_html/vendor/doctrine/lexer/tests/Doctrine/Common/Lexer/MutableLexer.php:9 Stack trace: #0 {main} thrown in /home/demoinvfsanz/public_html/vendor/doctrine/lexer/tests/Doctrine/Common/Lexer/MutableLexer.php on line 9