Fatal error: Uncaught TypeError: App\Service\PsService::getStars(): Argument #1 ($user) must be of type int, null given, called in /var/www/umimenemecky.cz/webroot/src/Snippet/Exercise/MedalBasedExercise/MedalBasedExercisePlugin.php on line 48 and defined in /var/www/umimenemecky.cz/webroot/src/Service/PsService.php:29 Stack trace: #0 /var/www/umimenemecky.cz/webroot/src/Snippet/Exercise/MedalBasedExercise/MedalBasedExercisePlugin.php(48): App\Service\PsService->getStars() #1 /var/www/umimenemecky.cz/webroot/src/Web/Controller/Exercise/PrekladatelExercise.php(45): App\Snippet\Exercise\MedalBasedExercise\MedalBasedExercisePlugin->register() #2 /var/www/umimenemecky.cz/webroot/exercise/prekladatel.php(17): App\Web\Controller\Exercise\PrekladatelExercise->actionDefault() #3 /var/www/umimenemecky.cz/webroot/index.php(85): include('...') #4 {main} thrown in /var/www/umimenemecky.cz/webroot/src/Service/PsService.php on line 29