Fatal error: Uncaught Error: Class "Doctrine\Common\Lexer\AbstractLexer" not found in /opt/lampp/htdocs/forum/flarum/vendor/egulias/email-validator/src/EmailLexer.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/egulias/email-validator/src/EmailLexer.php on line 7