logesh
Hi,
I am new elixir world and I am trying to run my first phoenix app. I have ran the mix phx.new command and then installed all the dependences as well. But when I run mix phx.server, I am getting this error.
[error] GenServer #PID<0.4365.0> terminating
** (UndefinedFunctionError) function :crypto.hmac/3 is undefined or private
(crypto 5.0.3) :crypto.hmac(:sha256, "postgres", <<58, 35, 165, 97, 41, 104, 150, 113, 67, 53, 62, 175, 175, 213, 142, 78, 0, 0, 0, 1>>)
(postgrex 0.15.0) lib/postgrex/scram.ex:52: Postgrex.SCRAM.hash_password/6
(postgrex 0.15.0) lib/postgrex/scram.ex:26: Postgrex.SCRAM.verify/2
(postgrex 0.15.0) lib/postgrex/protocol.ex:734: Postgrex.Protocol.auth_cont/4
(postgrex 0.15.0) lib/postgrex/protocol.ex:579: Postgrex.Protocol.handshake/2
(db_connection 2.4.0) lib/db_connection/connection.ex:82: DBConnection.Connection.connect/2
(connection 1.1.0) lib/connection.ex:622: Connection.enter_connect/5
(stdlib 3.16) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
Last message: nil
State: Postgrex.Protocol
Elixir version:
Erlang/OTP 24 [erts-12.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit] [dtrace]
Elixir 1.12.3 (compiled with Erlang/OTP 24)
OS: Macos Bigsur 11.6
Thanks! 
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Nicd
You need at least version 0.15.8 of the
postgrexpackage: postgrex/CHANGELOG.md at master · elixir-ecto/postgrex · GitHublogesh
Hi Thank you for the reply. I just followed the getting started documentation. Here is my mix.exs dependency list
I tried running mix deps.update --all
Still I am getting the same error.
Where should I do the change?
siddhant3030
If you’re just starting with elixir. I would just install through asdf. That way you can use multiple versions of elixir and erlang both locally and globally.
LostKobrakai
:crypto.hmacwas removed in OTP 24 after being deprecated before. Make sure you run the latest versions of your dependencies and that those are compatible with OTP 24.