`:E` returns `ambiguous use of user-defined command`

[zxubian]

• Vim bootstrap version(number in first line):
  vim-bootstrap 2022-12-25 06:54:24

• Operating system:
  Description: Ubuntu 20.04.5 LTS

• Vim/Nvim version:
  NVIM v0.4.3

• Languages:
  let g:vim_bootstrap_langs = "c,javascript,python,typescript"