Error executing vim.schedule lua callback: Vim:E474: Unidentified byte: around:0

[Blairi]

How can fix this error?

Error executing vim.schedule lua callback: Vim:E474: Unidentified byte: around:0
stack traceback:
[C]: in function 'json_decode'
...ri/.vim/plugged/completion-nvim/lua/completion/hover.lua:333: in function 'autoOpenHoverInPopup'
...e/blairi/.vim/plugged/completion-nvim/lua/completion.lua:196: in function 'cb'
vim.lua:285: in function vim.lua:285

I use default configuration
Thanks! <3

My nvim version

[NoahTheDuke]

That's an error in the plugin completion-nvim, not coc.nvim.

[chemzqm]

Seems it tried to parse user_data of complete item as json data, which could be wrong.