使用vim-plug在vi中安装coc.vim时出现问题

# 确保你的网络连接正常
# 尝试手动下载插件并安装
git clone https://github.com/neoclide/coc.nvim ~/.vim/plugged/coc.nvim

call plug#begin('~/.vim/plugged')
Plug 'neoclide/coc.nvim', {'branch': 'release'}
call plug#end()

# 安装 Node.js
curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
sudo apt-get install -y nodejs

{
  "languageserver": {
    "python": {
      "command": "pyls",
      "filetypes": ["python"]
    }
  }
}

" 初始化 vim-plug
call plug#begin('~/.vim/plugged')

" 安装 coc.vim
Plug 'neoclide/coc.nvim', {'branch': 'release'}

call plug#end()

" coc.vim 配置
let g:coc_global_extensions = [
  \ 'coc-pyls',
  \ 'coc-json',
  \ 'coc-tsserver'
  \ ]

" 使用 coc.nvim 的快捷键
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction