Fatal error: Uncaught RuntimeException: Unable to load ZF2. Run `php composer.phar install` or define a ZF2_PATH environment variable. in /var/www/gas/init_autoloader.php:53
Stack trace:
#0 /var/www/gas/public/index.php(89): require()
#1 {main}
thrown in /var/www/gas/init_autoloader.php on line 53