laravel - env file keeps deleting after deploying with Envoyer -

i'm using laravel 5.4, envoyer , forge. every time deploy master branch on envoyer, .env file gets deleted. has no content.

what should do? maybe configuration faulty?

the proper way setup set env variables manage environment @ envoyer. there laracast episode @ topic - https://laracasts.com/series/envoyer/episodes/9