Fatal error: Uncaught TypeError: mysqli_set_charset(): Argument #1 ($mysql) must be of type mysqli, true given in /app/app/Core/Database.php:43 Stack trace: #0 /app/app/Core/Database.php(43): mysqli_set_charset(true, 'utf8mb4') #1 /app/app/Core/Database.php(79): App\Core\DatabaseConnection->connect() #2 /app/app/Core/MainController.php(78): App\Core\Database::connect(Object(App\Core\MainController)) #3 /app/app/Traits/Singleton.php(45): App\Core\MainController->__construct() #4 /app/public/index.php(32): App\Core\MainController::getInstance() #5 {main} thrown in /app/app/Core/Database.php on line 43