Deoplete.nvim: Unknown error with coc + deoplete

[dylanirlbeck]

I'm getting the following error whenever I type in anything in insert mode:

[coc.nvim] error: Some plugin change completeopt on insert mode: Last set from ~/.config/nvim/bundle/de
oplete.nvim/autoload/deoplete/mapping.vim line 83!

I've never gotten this before, so any help debugging is much appreciated. I'm also happy to provide more information if needed.

[Shougo]

It is coc feature.
coc changes completeopt internally and if other plugins change it, it is detected.

deoplete changes completeopt, so it is conflicted with coc.
You should not mix coc and deoplete.