Fatal error: Uncaught TypeError: Unsupported operand types: string - int in /var/www/vhosts/hetedhetcsere.hu/httpdocs/application/controllers/cserebere.php:42 Stack trace: #0 /var/www/vhosts/hetedhetcsere.hu/httpdocs/system/core/CodeIgniter.php(375): Cserebere->resort() #1 /var/www/vhosts/hetedhetcsere.hu/httpdocs/index.php(203): require_once('...') #2 {main} thrown in /var/www/vhosts/hetedhetcsere.hu/httpdocs/application/controllers/cserebere.php on line 42