Fatal error: Uncaught TypeError: Return value of App\Service\OsTypeHelper::getOS() must be of the type string, null returned in /var/www/u0897632/data/pass-manager-1174/src/Service/OsTypeHelper.php:30 Stack trace: #0 /var/www/u0897632/data/pass-manager-1174/src/Service/OsTypeHelper.php(17): App\Service\OsTypeHelper::getOS() #1 /var/www/u0897632/data/pass-manager-1174/src/Controller/Api/CardController.php(90): App\Service\OsTypeHelper::defineDeviceOsType(Object(Symfony\Component\HttpFoundation\Request)) #2 /var/www/u0897632/data/pass-manager-1174/vendor/symfony/http-kernel/HttpKernel.php(163): App\Controller\Api\CardController->emmitNewCard('8df45bdd-0178-4...', Object(Symfony\Component\HttpFoundation\Request)) #3 /var/www/u0897632/data/pass-manager-1174/vendor/symfony/http-kernel/HttpKernel.php(75): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #4 /var/www/u0897632/data/pass-manager-1174/vendor/symfony/http-kernel/Kernel.php(202): Symfony\Component\HttpKernel\HttpK in /var/www/u0897632/data/pass-manager-1174/src/Service/OsTypeHelper.php on line 30