Fatal error: Uncaught Error: Call to a member function fetch_assoc() on boolean in /app/model/category.php:170 Stack trace: #0 /app/model/site.php(150): category::getByID(3) #1 /app/model/category.php(112): site::centerName() #2 /app/gry.php(23): category::browse('3') #3 /lib/controller.php(38): gry::przegladaj() #4 /lib/controller.php(15): controller->execute() #5 /index.php(4): controller->__construct() #6 {main} thrown in /app/model/category.php on line 170