GettextTranslator problem Language file(s) must be defined

Zdravim, stiahol som si pomocou composeru najnovsi nette sanbox + gettex translator.
Pri spusteni aplikacie mi hadze chybu Language file(s) must be defined.

Siel som podla navodu.

Moj config.neon (zlozka app/lang existuje a ma dobre prava)

parameters:

php:
	date.timezone: Europe/Prague
	# zlib.output_compression: yes

nette:
	application:
		errorPresenter: Error
		mapping:
			*: App\*Module\*Presenter

	session:
		expiration: 1 year

	extensions:
		gettextTranslator: GettextTranslator\DI\Extension

	gettextTranslator:
		lang: en
		files:
			app: %appDir%/lang

		layout: horizontal # or: vertical
		height: 450



services:
	- Model\UserManager
	- App\RouterFactory
	router: @App\RouterFactory::createRouter