Fatal error: Uncaught Error: Class "Doctrine\Common\Lexer\AbstractLexer" not found in /home/digitalproduct/public_html/projectmanagementsoftware/vendor/doctrine/common/lib/Doctrine/Common/Lexer.php:35 Stack trace: #0 {main} thrown in /home/digitalproduct/public_html/projectmanagementsoftware/vendor/doctrine/common/lib/Doctrine/Common/Lexer.php on line 35