Fatal error: Uncaught Error: Call to a member function getId() on null in /var/www/otouczelnie/test/application/modules/matura/controllers/matura.php:636 Stack trace: #0 /var/www/otouczelnie/test/system/core/CodeIgniter.php(359): matura->arkusze_trzeci_stopien() #1 /var/www/otouczelnie/test/public_html/index.php(244): require_once('...') #2 {main} thrown in /var/www/otouczelnie/test/application/modules/matura/controllers/matura.php on line 636