Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.b = 'Buffer List'

[meison92]

Problems summary

these warning on the botom of nvim.
Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.b = 'Buffer List'
Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.n = 'Next Buffer'
Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.p = 'Prev Buffer'
Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.d = 'Kill Buffer'
Load Plugins keybinds error:Vim(let):E716: Key not present in Dictionary: b.u = 'Undo Kill'

Environment Information

• OS:

• thinkvim :echo g:thinkvim_version output:2.6.5

• neovim :version output:0.4.4

• :checkhealth or :CheckHealth result(neovim only):
  health#coc#check
  ========================================================================

• OK: Environment check passed

• OK: Javascript bundle build/index.js found

• OK: Service started

health#nvim#check

Configuration

• OK: no issues found

Performance

• OK: Build type: Release

Remote Plugins

• OK: Up to date

terminal

• INFO: key_backspace (kbs) terminfo entry: key_backspace=\177
• INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
• INFO: $VTE_VERSION='5202'
• INFO: $COLORTERM='truecolor'

health#provider#check

Clipboard (optional)

• OK: Clipboard tool found: xsel

Python 2 provider (optional)

• INFO: pyenv: Path: /home/meison/.pyenv/libexec/pyenv
• INFO: pyenv: Root: /home/meison/.pyenv
• INFO: g:python_host_prog is not set. Searching for python2 in the environment.
• WARNING: pyenv is not set up optimally.
  • ADVICE:
    • Create a virtualenv specifically for Neovim using pyenv, and set g:python_host_prog. This will avoid the need to install the pynvim module in each version/virtualenv.
• INFO: Executable: /usr/bin/python2
• INFO: Python version: 2.7.17
• INFO: pynvim version: 0.2.0 (outdated; from /usr/lib/python2.7/dist-packages/neovim)
• WARNING: Latest pynvim is NOT installed: 0.4.3

Python 3 provider (optional)

• INFO: pyenv: Path: /home/meison/.pyenv/libexec/pyenv
• INFO: pyenv: Root: /home/meison/.pyenv
• INFO: Using: g:python3_host_prog = "/home/meison/.pyenv/versions/neovim/bin/python"
• INFO: Executable: /home/meison/.pyenv/versions/neovim/bin/python
• INFO: Python version: 3.6.9
• INFO: pynvim version: 0.4.3
• OK: Latest pynvim is installed.

Ruby provider (optional)

• INFO: Ruby: ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]
• WARNING: neovim-ruby-host not found.
  • ADVICE:
    • Run gem install neovim to ensure the neovim RubyGem is installed.
    • Run gem environment to ensure the gem bin directory is in $PATH.
    • If you are using rvm/rbenv/chruby, try "rehashing".
    • See :help |g:ruby_host_prog| for non-standard gem installations.

Node.js provider (optional)

• INFO: Node.js: v14.16.1
• WARNING: Missing "neovim" npm (or yarn) package.
  • ADVICE:
    • Run in shell: npm install -g neovim
    • Run in shell (if you use yarn): yarn global add neovim

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

1. foo
2. bar
3. baz

Screenshot (if possible)