Fatal error: Uncaught Error: Call to undefined method App\Core\Database::getInstance() in /www/_depot_app/app/Models/EmployeeCashAdvance.php:16 Stack trace: #0 /www/_depot_app/app/Controllers/CashAdvanceController.php(20): App\Models\EmployeeCashAdvance->__construct() #1 /www/_depot_app/public/index.php(47): App\Controllers\CashAdvanceController->__construct() #2 {main} thrown in /www/_depot_app/app/Models/EmployeeCashAdvance.php on line 16