Unhandled ErrorException (Code: 2)

» \ErrorException

Exception while building parameters when calling anyonymous function defined in '/opt/app/controller/storefront/CmsController.php' Lines: 79-130: Undefined array key "lang"

Thrown in: /opt/app/viewBag/layout/MainLayoutViewBag.php (86)
 #0 /opt/vendor/continue/gis/src/mvc/Application.php(139): gis\core\di\DiContainer->callArr()
 #1 /opt/vendor/continue/gis/src/mvc/Application.php(165): gis\mvc\Application->call()
 #2 /opt/vendor/continue/gis/src/mvc/Application.php(230): gis\mvc\Application->callRequest()
 #3 /opt/src/base/vendor/apigmbh/ApiGmbhShopBootstrap.php(930): gis\mvc\Application->serve()
 #4 /opt/www/index.php(25): s2p\src\base\vendor\apigmbh\ApiGmbhShopBootstrap->runFrontend()
 #5 {main}
    

Previous Exception:

Unhandled ErrorException (Code: 2)

» \ErrorException

Undefined array key "lang"

Thrown in: /opt/app/viewBag/layout/MainLayoutViewBag.php (86)
 #0 [internal function]: coco\exception\CocoExceptionHandler::coco\exception\{closure}()
 #1 /opt/vendor/continue/gis/src/mvc/Application.php(223): call_user_func_array()
 #2 /opt/app/viewBag/layout/MainLayoutViewBag.php(86): gis\mvc\Application->gis\mvc\{closure}()
 #3 /opt/vendor/continue/gis/src/mvc/Application.php(98): s2p\app\viewBag\layout\MainLayoutViewBag->__construct()
 #4 /opt/vendor/continue/gis/src/core/di/DiContainer.php(299): gis\mvc\Application->gis\mvc\{closure}()
 #5 /opt/vendor/continue/gis/src/core/di/DiContainer.php(399): gis\core\di\DiContainer->callArr()
 #6 /opt/vendor/continue/gis/src/core/di/DiContainer.php(546): gis\core\di\DiContainer->_tryBuildingByInterface()
 #7 /opt/vendor/continue/gis/src/core/di/DiContainer.php(208): gis\core\di\DiContainer->getInstance()
 #8 /opt/vendor/continue/gis/src/core/di/DiContainer.php(278): gis\core\di\DiContainer->buildParameters()
 #9 /opt/vendor/continue/gis/src/mvc/Application.php(139): gis\core\di\DiContainer->callArr()
 #10 /opt/vendor/continue/gis/src/mvc/Application.php(165): gis\mvc\Application->call()
 #11 /opt/vendor/continue/gis/src/mvc/Application.php(230): gis\mvc\Application->callRequest()
 #12 /opt/src/base/vendor/apigmbh/ApiGmbhShopBootstrap.php(930): gis\mvc\Application->serve()
 #13 /opt/www/index.php(25): s2p\src\base\vendor\apigmbh\ApiGmbhShopBootstrap->runFrontend()
 #14 {main}