Fatal error: Uncaught TypeError: Argument 1 passed to Source\Core\Model::findById() must be of the type int, null given, called in /var/www/html/source/App/Web.php on line 229 and defined in /var/www/html/source/Core/Model.php:140 Stack trace: #0 /var/www/html/source/App/Web.php(229): Source\Core\Model->findById(NULL) #1 /var/www/html/vendor/polon/router/src/Dispatch.php(143): Source\App\Web->article(Array) #2 /var/www/html/vendor/polon/router/src/Dispatch.php(123): Polon\Router\Dispatch->execute() #3 /var/www/html/index.php(128): Polon\Router\Dispatch->dispatch() #4 {main} thrown in /var/www/html/source/Core/Model.php on line 140