Fatal error: Uncaught TypeError: Cannot assign null to property Room::$averageRoomAmount of type int in C:\Websites\CSI - Booking\html\app\Models\Room.php:15 Stack trace: #0 C:\Websites\CSI - Booking\html\app\Controllers\SQLController.php(285): Room->__construct('DSU ...', NULL) #1 C:\Websites\CSI - Booking\html\app\Controllers\SQLController.php(235): SQLController->fetchHotelRooms(4098) #2 C:\Websites\CSI - Booking\html\congress_details.php(18): SQLController->fetchCongressHotels('1713') #3 {main} thrown in C:\Websites\CSI - Booking\html\app\Models\Room.php on line 15