error when Im trying deploy laravel 5.1 on my share host

I copied all the file to folder, i create htaccess and set my website run to public folder, it have error ? what should I do, thanks

Fatal error: require(): Failed opening required '/home/u160163242/public_html/vendor/symfony/var-dumper/Resources/functions/dump.php' (include_path='.:/opt/php-5.5/pear') in /home/u160163242/public_html/vendor/composer/autoload_real.php on line 55

via Chebli Mohamed