Could not start application calorie: Calorie.Application.start(:normal, []) returned an error: shutdown: failed to start child: CalorieWeb.Endpoint

I feel like I have been summoned with the word “calorie” ;).

but answering your question, you need to either downgrade to OTP < 24, or update Phoenix PubSub to not depend on pg2 as it was removed from Erlang. Check out this thread:

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