Warning: Undefined variable $farm_id in /home/profarmsadmin/htdocs/farmmanager/production_room.php on line 5

Fatal error: Uncaught TypeError: ProductionRoom::readFromFarmId(): Argument #1 ($farm_id) must be of type int, null given, called in /home/profarmsadmin/htdocs/farmmanager/production_room.php on line 5 and defined in /home/profarmsadmin/htdocs/farmmanager/models/ProductionRoom.php:71 Stack trace: #0 /home/profarmsadmin/htdocs/farmmanager/production_room.php(5): ProductionRoom->readFromFarmId() #1 {main} thrown in /home/profarmsadmin/htdocs/farmmanager/models/ProductionRoom.php on line 71