luceos
[Tue Jun 20 18:43:29.835523 2017] [:error] [pid 4021] [client 127.0.0.1:35456] PHP Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='.:/usr/share/php') in /var/www/html/flarum/index.php on line 12
this error is arising on /var/log/apache2/error.log