I just ran a relatively minor deps update on my Ash / Ash Auth / Phoenix project:

Upgraded:
  ash 3.5.32 => 3.5.36
  ash_authentication 4.9.8 => 4.9.9
  ash_authentication_phoenix 2.10.4 => 2.10.5
  ash_phoenix 2.3.11 => 2.3.14
  ash_postgres 2.6.13 => 2.6.16
  ash_sql 0.2.89 => 0.2.90
  bandit 1.7.0 => 1.8.0
  castore 1.0.14 => 1.0.15
  cc_precompiler 0.1.10 => 0.1.11
  fine 0.1.1 => 0.1.4
  igniter 0.6.25 => 0.6.28
  lazy_html 0.1.3 => 0.1.6
  phoenix 1.8.0-rc.4 => 1.8.0
  phoenix_live_view 1.1.0-rc.4 => 1.1.8
  postgrex 0.20.0 => 0.21.1 (minor)
  spark 2.2.67 => 2.2.68
  thousand_island 1.3.14 => 1.4.0

Probably the most notable was Phoenix Live View 1.1.0-rc4 → 1.1.8 (eek, not sure why that was stuck back there). Pretty minor Ash deps upgrade…

And now when I hit /sign-in (or, any other page that requires an authenticated user) I’m getting this:

[error] ** (RuntimeError) Cannot set assign `current_members` before default `AshAuthentication.Phoenix.LiveSession.on_mount/4` has run.
    (ash_authentication_phoenix 2.10.5) lib/ash_authentication_phoenix/live_session.ex:174: anonymous fn/5 in AshAuthentication.Phoenix.LiveSession.on_mount/4
    (elixir 1.18.4) lib/enum.ex:4515: anonymous fn/3 in Enum.reduce/3
    (elixir 1.18.4) lib/stream.ex:1761: anonymous fn/3 in Enumerable.Stream.reduce/3
    (elixir 1.18.4) lib/enum.ex:4968: Enumerable.List.reduce/3
    (elixir 1.18.4) lib/stream.ex:1773: Enumerable.Stream.do_each/4
    (elixir 1.18.4) lib/enum.ex:4515: Enum.reduce/3
    (ash_authentication_phoenix 2.10.5) lib/ash_authentication_phoenix/live_session.ex:170: AshAuthentication.Phoenix.LiveSession.on_mount/4
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/lifecycle.ex:158: anonymous fn/4 in Phoenix.LiveView.Lifecycle.mount/3
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/lifecycle.ex:237: Phoenix.LiveView.Lifecycle.reduce_socket/3
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/utils.ex:346: anonymous fn/6 in Phoenix.LiveView.Utils.maybe_call_live_view_mount!/5
    (telemetry 1.3.0) /Users/zac/Projects/BossLogic/waste_walk/deps/telemetry/src/telemetry.erl:324: :telemetry.span/3
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/static.ex:324: Phoenix.LiveView.Static.call_mount_and_handle_params!/5
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/static.ex:155: Phoenix.LiveView.Static.do_render/4
    (phoenix_live_view 1.1.8) lib/phoenix_live_view/controller.ex:39: Phoenix.LiveView.Controller.live_render/3
    (phoenix 1.8.0) lib/phoenix/router.ex:416: Phoenix.Router.__call__/5
    (waste_walk 0.1.0) lib/waste_walk_web/endpoint.ex:1: WasteWalkWeb.Endpoint.plug_builder_call/2
    (waste_walk 0.1.0) deps/plug/lib/plug/debugger.ex:155: WasteWalkWeb.Endpoint."call (overridable 3)"/2
    (waste_walk 0.1.0) lib/waste_walk_web/endpoint.ex:1: WasteWalkWeb.Endpoint.call/2
    (phoenix 1.8.0) lib/phoenix/endpoint/sync_code_reload_plug.ex:22: Phoenix.Endpoint.SyncCodeReloadPlug.do_call/4
    (bandit 1.8.0) lib/bandit/pipeline.ex:131: Bandit.Pipeline.call_plug!/2

Which is kind of a black-box thing to break. Any ideas how I can diagnose and fix it?

I’m suspecting that perhaps my Ash Authentication original config is somehow out of date (maybe run a new igniter project, compare the results)… or… kinda at a loss.

//Edit

Well, generated a parallel project with latest libs. I don’t see any obvious differences between the new and the old, looked at all the config files, things like live_user_auth.ex etc., I don’t see any significant delta. Really weird.