user.auth ArgumentError

[ConnorRigby]

Generated demo_fw app
NervesHub server: nerveshub.fly.dev:443
Username or email address: connorrigby
NervesHub password: 
Authenticating...
** (ArgumentError) errors were found at the given arguments:

  * 1st argument: not a binary

    :erlang.binary_to_atom(nil, :utf8)
    (tesla 1.8.0) lib/tesla/adapter/mint.ex:161: Tesla.Adapter.Mint.open_conn/2
    (tesla 1.8.0) lib/tesla/adapter/mint.ex:121: Tesla.Adapter.Mint.do_request/5
    (tesla 1.8.0) lib/tesla/adapter/mint.ex:61: Tesla.Adapter.Mint.call/2
    (tesla 1.8.0) lib/tesla/middleware/json.ex:57: Tesla.Middleware.JSON.call/3
    (tesla 1.8.0) lib/tesla/middleware/follow_redirects.ex:46: Tesla.Middleware.FollowRedirects.redirect/3
    (nerves_hub_cli 2.0.0) lib/nerves_hub_cli/api.ex:42: NervesHubCLI.API.request/4
    (nerves_hub_cli 2.0.0) lib/mix/tasks/nerves_hub.user.ex:108: Mix.Tasks.NervesHub.User.auth/1

This happens when using the official docs here

[ConnorRigby]

upon digging further, this seems to be an issue w/ the URI encoding

MINT_OPTS: {%URI{
   scheme: nil,
   authority: "nerveshub.fly.dev:443",
   userinfo: nil,
   host: "nerveshub.fly.dev",
   port: 443,
   path: "/api/users/login",
   query: nil,
   fragment: nil
 },

      IO.inspect({uri, opts}, label: "MINT_OPTS")

      with {:ok, conn} <-
             HTTP.connect(String.to_atom(uri.scheme), uri.host, uri.port, Enum.into(opts, [])) do
        # If there were redirects, and passed `closed_conn: false`, we need to close opened connections to these intermediate hosts.
        {:ok, conn, Map.put(opts, :close_conn, true)}
      end

[ConnorRigby]

adding scheme: "https", to the :nerves_hub_cli config.exs entry solved this.