Hexer is not including user-agent header

[harenson]

I tried to authenticate my user in order to publish a package and I got this error message:

➜  erlang-github git:(master) ./hexer user.auth
Username: myusername
Password:
Generating API key...
Error: Generation of API key failed ({400,
                                      #{<<"message">> => <<"User-Agent header is requried">>,
                                        <<"status">> => 400}})