Application module `start` function not called?

Questions & Help Questions
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Hi

I have fairly complicated Phoenix app (but it doubt that this is Phoenix related issue?). In it I have the MyApp.Application module with start(_type, _args) function. I noticed today (after long time without working on it), that the start() function isn’t called at all. In the mix.exs file, the mod: is set correctly to that module - I haven’t changed anything there.

How one can try to debug this? What is happening before call to start() - maybe something there hangs?

I’ve tried rebuild from scratch, re-get deps, etc. And nothing, the function will not be called.
When I created new project, all seems OK in it.

I’m using Erlang/OTP 28.1 and Elixir 1.18.4

Update:
If I use MIX_ENV=prod, then I can see print at the beginning of the start() function. But I want to use the dev env :slight_smile: