Protocol.UndefinedError: protocol Enumerable not implemented for nil of type Atom. This protocol is implemented for the fo...

[sentry-joshmartin-ch]

Sentry Issue: BACKEND-1DN

Protocol.UndefinedError: protocol Enumerable not implemented for nil of type Atom. This protocol is implemented for the following type(s): DBConnection.PrepareStream, DBConnection.Stream, Date.Range, Ecto.Adapters.SQL.Stream, File.Stream, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Jason.OrderedObject, List, Map, MapSet, Postgrex.Stream, Range, Stream
  File "lib/enum.ex", line 1, in Enumerable.impl_for!/1
  File "lib/enum.ex", line 143, in Enumerable.reduce/3
  File "lib/enum.ex", line 4144, in Enum.reject/2
  File "lib/hygeia_web/live/system_messages_banner.sface", line 4, in anonymous fn/3 in HygeiaWeb.SystemMessagesBanner.render/1
  File "lib/phoenix_live_view/diff.ex", line 370, in Phoenix.LiveView.Diff.traverse/6
...
(3 additional frame(s) were not displayed)

(Protocol.UndefinedError protocol Enumerable not implemented for nil of type Atom. This protocol is implemented for the following type(s): DBConnection.PrepareStream, DBConnection.Stream, Date.Range, Ecto.Adapters.SQL.Stream, File.Stream, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Jason.OrderedObject, List, Map, MapSet, Postgrex.Stream, Range, Stream)

[maennchen]

Order of Application workers is wrong. The System Message Cache should be before the Endpoint.