How do I invoke Pipeline.handle_info from a Phoenix.WebChannel?

def handle_in("new_audio", %{"data" => audio_data}, socket) do
    IO.inspect("pipelines: ")
    # IO.inspect(Membrane.Pipeline.list_pipelines())
    [head | _] = Membrane.Pipeline.list_pipelines()
    # IO.inspect(head)
    send(head, audio_data)
    {:noreply, socket}
  end

[error] <0.768.0>/ Error occured in Membrane Pipeline:
%Membrane.CallbackError{
  message: "Invalid value returned from AudioTranscription.StreamToFile.:handle_info:

@impl true
  def handle_info(audio_data, ctx, _state) do
    # Process the audio data
    IO.inspect("ctx")
    IO.inspect(ctx)
    IO.inspect("audio_data")
    IO.inspect(audio_data)
    # ctx.notify_child(AudioTranscription.Source, audio_data)
    # AudioTranscription.AudioSource.receive_audio_data(audio_data)
  end