%Porcelain.UsageError{message: “Looks like the :porcelain app is not running”}

[ijunaidfarooq]

Code_change/3 callback not working on hot upgrade

I would suggest a simpler test, which does not rely on Logger: defmodule EvercamMedia.PorcelainJanitor do use GenServer @vsn DateTime.to_unix(DateTime.utc_now()) def vsn, do: GenServer.call(__MODULE__, :vsn) def start_link() do GenServer.start_link(__MODULE__, [], name: __MODULE__) end def init(args) do {:ok, 1} end def handle_call(:vsn, _from, state), do: {:reply, state, state} def code_change(_, state, _) do state + 1 end end Run the upgrade, then from a …

I hope you will see and tell what is the issue now?