Warning: require_once(/var/www/vendor/composer/autoload_real.php): failed to open stream: Cannot allocate memory in /var/www/vendor/autoload.php on line 5

Fatal error: require_once(): Failed opening required '/var/www/vendor/composer/autoload_real.php' (include_path='.:/usr/local/lib/php') in /var/www/vendor/autoload.php on line 5