Fatal error: Uncaught Error: Call to a member function query() on null in C:\home\site\wwwroot\app\models\Location_model.php:34 Stack trace: #0 C:\home\site\wwwroot\app\controllers\Accountants.php(30): Location_model->getStates() #1 C:\home\site\wwwroot\system\core\Router.php(38): Accountants->city() #2 C:\home\site\wwwroot\index.php(83): Router->dispatch() #3 {main} thrown in C:\home\site\wwwroot\app\models\Location_model.php on line 34