init

lib/myapp/auth/handler.ex

@@ -0,0 +1,10 @@
+defmodule MyApp.Auth.ErrorHandler do
+  import Plug.Conn
+  alias MyAppWeb.Response
+
+  def auth_error(conn, {type, _reason}, _opts) do
+    conn
+    |> put_status(401)
+    |> Response.json(to_string(type))
+  end
+end