Warning: require_once(vendor/autoload.php): failed to open stream: No such file or directory in /home/makintou/public_html/intro/vendor/codeception/stub/RoboFile.php on line 2

Fatal error: require_once(): Failed opening required 'vendor/autoload.php' (include_path='.:/opt/alt/php56/usr/share/pear:/opt/alt/php56/usr/share/php') in /home/makintou/public_html/intro/vendor/codeception/stub/RoboFile.php on line 2