Warning: Undefined array key "login" in /var/www/html/shopshop2/src/Controller/DefaultController.php on line 335

Fatal error: Uncaught TypeError: MyApp\Model\UserModel::getUserByEmail(): Argument #1 ($email) must be of type string, null given, called in /var/www/html/shopshop2/src/Controller/DefaultController.php on line 335 and defined in /var/www/html/shopshop2/src/Model/UserModel.php:70 Stack trace: #0 /var/www/html/shopshop2/src/Controller/DefaultController.php(335): MyApp\Model\UserModel->getUserByEmail() #1 [internal function]: MyApp\Controller\DefaultController->cart() #2 /var/www/html/shopshop2/src/Routing/Router.php(93): call_user_func() #3 /var/www/html/shopshop2/public/index.php(25): MyApp\Routing\Router->route() #4 {main} thrown in /var/www/html/shopshop2/src/Model/UserModel.php on line 70