I’m getting a super weird error when deploying an app with phoenix_live_view on Heroku: 09:33:03.143 [error] Ranch listener ReporterWeb.Endpoint.HTTP had connection process started with :cowboy_clear:start_link/4 at #PID<0.576.0> exit with reason: {:function_clause, [{Phoenix.Socket.Message, :from_…

Ok, it looks like for whatever reason when running the live view socket on Heroku, it uses Phoenix.Socket.V1.JSONSerializer instead of Phoenix.Socket.V2.JSONSerializer. However another (older socket before I implemented live view) does use Phoenix.Socket.V2.JSONSerializer!

Elixir Programming Language Forum

Weird error with phoenix_live_view on Heroku

Questions & Help Questions

ream88 December 6, 2019, 5:02pm 3

I got it working, see the cross post on GitHub for more info here.