Phoenix build warnings and fatal error

I’ve been trying to bring my Phoenix app up to date. I’m now getting lots of warnings and a fatal error when I try to start it up. The warnings include messages like:

  • Rebar3 detected a lock file from a newer version. …
  • Bad dependency version for … (many)
  • Package not found in registry: unicode_util_compat-0.7.0

The fatal error begins “Could not compile dependency :idna …” and the terminal output looks like this. Help?


Try mix local.rebar, remove _build and deps and compile again.


That did the trick; thanks! Now I can get to some of the other warnings that were hidden in the noise…


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