== Compilation error in file lib/coins/send_coins_process.ex ==

[Yamilquery]

Hi, first of all, thank you for your repo.

But, I'm struggling with this, when I try to use mix setup_db or mix reset_db I get the following error:

ompiling 12 files (.ex)
warning: unused alias Transfer
  lib/coins.ex:6


== Compilation error in file lib/coins/send_coins_process.ex ==
** (UndefinedFunctionError) function :elixir_errors.warn/1 is undefined or private. Did you mean one of:

      * warn/3

    (elixir) :elixir_errors.warn("Commanded Deprecation Warning:\nProcessmanager Elixir.Coins.SendCoinsProcess defined error/4 callback.\nThis is deprecated in favor of error/3\nSee https://github.com/commanded/commanded/blob/master/guides/Process%20Managers.md#deprecated-error4")
    (stdlib) erl_eval.erl:677: :erl_eval.do_apply/6
    /Users/yamildiazaguirre/Documents/freelance/rideqro/ex-cbsf2018/lib/coins/send_coins_process.ex:1: Commanded.ProcessManagers.ProcessManager.__before_compile__/1