Fatal error: Uncaught TypeError: App\Models\Article::search(): Argument #1 ($q) must be of type string, null given, called in /var/customers/webs/web1/html/vaiqus/app/controllers/CityController.php on line 62 and defined in /var/customers/webs/web1/html/vaiqus/app/models/Article.php:112
Stack trace:
#0 /var/customers/webs/web1/html/vaiqus/app/controllers/CityController.php(62): App\Models\Article->search()
#1 /var/customers/webs/web1/html/vaiqus/core/Router.php(78): App\Controllers\CityController->show()
#2 /var/customers/webs/web1/html/vaiqus/core/Router.php(35): Core\Router->callHandler()
#3 /var/customers/webs/web1/html/vaiqus/index.php(42): Core\Router->dispatch()
#4 {main}
  thrown in /var/customers/webs/web1/html/vaiqus/app/models/Article.php on line 112