I am following this https://docs.ejabberd.im/developer/install-osx/ and got the error, can anyone help?
ejabberd 20.04 supports Erlang/OTP from 19.3 up to 22.3. The new Erlang 23 is not supported yet, see https://github.com/processone/ejabberd/issues/3282
Solution? By now, use an older Erlang version.