Warning: Undefined variable $actionClass in /usr/share/nginx/testweb.dbsearch.net/public/index.php on line 49

Fatal error: Uncaught TypeError: DI\Container::get(): Argument #1 ($id) must be of type string, null given, called in /usr/share/nginx/testweb.dbsearch.net/public/index.php on line 49 and defined in /usr/share/nginx/testweb.dbsearch.net/vendor/php-di/php-di/src/Container.php:130 Stack trace: #0 /usr/share/nginx/testweb.dbsearch.net/public/index.php(49): DI\Container->get() #1 {main} thrown in /usr/share/nginx/testweb.dbsearch.net/vendor/php-di/php-di/src/Container.php on line 130