Slim Application Error

The application could not run because of the following error:
Details

Type: TypeError
Code: 0
Message: rawurldecode() expects parameter 1 to be string, null given
File: /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/Router.php
Line: 207
Trace

#0 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/Router.php(207): rawurldecode(NULL)
#1 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/Middleware/RoutingMiddleware.php(74): Slim\Router->dispatch(Object(Slim\Http\ServerRequest))
#2 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/App.php(494): Slim\Middleware\RoutingMiddleware->performRouting(Object(Slim\Http\ServerRequest))
#3 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/Middleware/ErrorMiddleware.php(97): Slim\App->__invoke(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response))
#4 [internal function]: Slim\Middleware\ErrorMiddleware->__invoke(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(CMS\App))
#5 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/DeferredCallable.php(49): call_user_func_array(Object(Slim\Middleware\ErrorMiddleware), Array)
#6 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(CMS\App))
#7 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(73): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(CMS\App))
#8 /home/metallpack/metallpack.ru/docs/cms/core/middleware/PSR15AdapterMiddleware.php(41): Slim\App->Slim\{closure}(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response))
#9 /home/metallpack/metallpack.ru/docs/cms/core/auth/AuthMiddleware.php(27): cms\core\middleware\PSR15AdapterMiddleware->handle(Object(Slim\Http\ServerRequest))
#10 /home/metallpack/metallpack.ru/docs/cms/core/middleware/PSR15AdapterMiddleware.php(36): cms\core\auth\AuthMiddleware->process(Object(Slim\Http\ServerRequest), Object(cms\core\middleware\PSR15AdapterMiddleware))
#11 [internal function]: cms\core\middleware\PSR15AdapterMiddleware->__invoke(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(Closure))
#12 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/DeferredCallable.php(49): call_user_func_array(Object(cms\core\middleware\PSR15AdapterMiddleware), Array)
#13 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(Closure))
#14 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(73): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\ServerRequest), Object(Slim\Http\Response), Object(Closure))
#15 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(120): Slim\App->Slim\{closure}(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response))
#16 /home/metallpack/metallpack.ru/docs/vendor/slim/slim/Slim/App.php(451): Slim\App->callMiddlewareStack(Object(Slim\Http\ServerRequest), Object(Slim\Http\Response))
#17 /home/metallpack/metallpack.ru/docs/cms/App.php(153): Slim\App->handle(Object(Slim\Http\ServerRequest))
#18 /home/metallpack/metallpack.ru/docs/bootstrap.php(58): CMS\App->run(Object(Slim\Http\ServerRequest))
#19 /home/metallpack/metallpack.ru/docs/index.php(12): require_once('/home/metallpac...')
#20 {main}