Fatal error: Class 'Doctrine\Common\Lexer\AbstractLexer' not found in /var/www/html/dev/spa/vendor/doctrine/common/lib/Doctrine/Common/Lexer.php on line 36

Call Stack:
    0.0003     229352   1. {main}() /var/www/html/dev/spa/vendor/doctrine/common/lib/Doctrine/Common/Lexer.php:0