Fatal error: Uncaught TypeError: magazin\category\CategoryFactory::byId(): Argument #1 ($id) must be of type int, null given, called in /var/www/html/magazin/src/category/CategoryFactory.php on line 56 and defined in /var/www/html/magazin/src/category/CategoryFactory.php:15 Stack trace: #0 /var/www/html/magazin/src/category/CategoryFactory.php(56): magazin\category\CategoryFactory::byId(NULL) #1 /var/www/html/magazin/src/Magazin.php(97): magazin\category\CategoryFactory::byTag(Object(magazin\tag\Tag)) #2 /var/www/html/magazin/src/Magazin.php(30): magazin\Magazin->_dispatchURL(Object(magazin\URL)) #3 /var/www/html/magazin/index.php(22): magazin\Magazin->__construct('/magazin/tag/za...', Object(Smarty)) #4 {main} thrown in /var/www/html/magazin/src/category/CategoryFactory.php on line 15