Module is not available send_update failed

I am getting the below exception sometimes. Module already exist.

an exception was raised:
         ** (ArgumentError) send_update failed (module ... is not available)
 (phoenix_live_view 0.16.1) lib/phoenix_live_view/channel.ex:237: Phoenix.LiveView.Channel.handle_info/2

Does this happen in production, or in development? Is the rest of your code doing anything unusual with module loading? Because the error message demonstrates the module does NOT exist, at least sometimes:

I see this in my local. Sometimes some tests fail with this error. When I rerun the test that error vanishes. I have not seen this error in production yet.