Failed building wheel for pynvim

[WingLim]

Problems summary

Run scripts/install.sh in a new machine, when install python package, will get this error.

Environment Information

• OS: Ubuntu 20.04

• thinkvim :echo g:thinkvim_version output: 2.6.5

• neovim :version output: v0.4.3

• :checkhealth or :CheckHealth result(neovim only):

How to reproduce the problem from neovim startup (Required!)

1. Clone ThinkVim to ~/.config/nvim
2. cd ~/.config/nvim
3. bash scripts/install.sh
4. During the install process, get this error

Screenshot (if possible)