Fatal error: Uncaught Error: Class "Doctrine\Common\Lexer\AbstractLexer" not found in /home/blskysoftware/public_html/migration/vendor/doctrine/lexer/tests/ConcreteLexer.php:13 Stack trace: #0 {main} thrown in /home/blskysoftware/public_html/migration/vendor/doctrine/lexer/tests/ConcreteLexer.php on line 13