Opencart issue (urgent)

Fatal error: require(): Failed opening required '/var/www/html/touchlcdhouse/system/../../vendor/autoload.php' (include_path='.:/usr/share/php') in /var/www/html/touchlcdhouse/system/library/mail/mailcontrollertrait.php on line 4


I have to resolve the issue soon, so the one who has to start now should bid.