How to resolve eldoc error

[nikolaipaul]

I'm fairly new to emacs and I can't get elm-mode to work as expected.

Things that don't work:

• Autocompletion
• Showing errors
• Showing types of expressions

I installed elm via the nix package manager. All the elm commands do work in the terminal.

Can you help me to resolve that issue?

This is the error I receive:

[purcell]

Please see #141 and #142. The latter talks about how eldoc and completion don't yet work with Elm 0.19 (because we rely on elm-oracle, which isn't compatible with 0.19). The former gives some tips on how to generally configure elm-mode for Elm 0.19, which must be done manually for now.