elixir.vim: line 14: E117: Unknown function: textobj#user#plugin

[Dave Lucia]

I'm getting the following issue using Plug to manage my NeoVim dependencies.

Plug 'kana/vim-textobj-user'
Plug 'andyl/vim-textobj-elixir'

davidluciawork@Davids-MacBook-Pro: ~/ on manifest
$ vi
Error detected while processing /Users/davidluciawork/.dotfiles/vim/plugged/vim-textobj-elixir/plugin/textobj/elixir.vim:
line   14:
E117: Unknown function: textobj#user#plugin
Press ENTER or type command to continue