Error in multilingual site when «en» is not enabled.

If you try to enable the multilingual option like this : `DefaultContentLanguage = "it"` ``` [languages] [languages.it] weight = 1 [languages.de] weight = 2 ``` You have the following message : `failed to create config from result: failed to decode "languages": config value "en" for defaultContentLanguage does not match any language definition` As soon as I replace any language with «en», it works.