Error when using doc_connect

[diogomrts]

When trying to use doc_connect this error is thrown:

** (ArgumentError) errors were found at the given arguments:

  * 1st argument: the device does not exist

    (stdlib 4.3.1.4) io.erl:94: :io.put_chars(nil, ["* __Receive:__ ok", 10])
    (bureaucrat 0.2.10) lib/bureaucrat/markdown_writer.ex:219: Bureaucrat.MarkdownWriter.puts/2
    (elixir 1.16.3) lib/enum.ex:987: Enum."-each/2-lists^foreach/1-0-"/2
    (elixir 1.16.3) lib/enum.ex:1708: anonymous fn/3 in Enum.map/2
    (stdlib 4.3.1.4) maps.erl:411: :maps.fold_1/3
    (elixir 1.16.3) lib/enum.ex:2540: Enum.map/2
    (bureaucrat 0.2.10) lib/bureaucrat/formatter.ex:22: Bureaucrat.Formatter.suite_finished/0
    (stdlib 4.3.1.4) gen_server.erl:1123: :gen_server.try_dispatch/4
    (stdlib 4.3.1.4) gen_server.erl:1200: :gen_server.handle_msg/6
    (stdlib 4.3.1.4) proc_lib.erl:240: :proc_lib.init_p_do_apply/3

These are my settings:

Bureaucrat.start(
  writer: Bureaucrat.MarkdownWriter,
  default_path: "priv/static/doc/websockets.md",
  paths: [],
  titles: [],
  env_var: "DOC",
  json_library: Jason
)

The asserts piped into docs() work normally, and I tried using Jason and Poison