error b:md_tick not exist when switch buffer

[T-bag-A]

I have modify the md_instant.vim to fixed the problem,
pls check

vim.command('autocmd  CursorMovedI <buffer> call UpdateMarkdown()')
vim.command('autocmd  CursorMoved <buffer> call UpdateMarkdown()')
vim.command('autocmd  VimLeave <buffer> call CloseMarkdown()')

add for current buffer autocmd

[bangenlanbai]

I set it up according to you, but I still reported a mistake. is there anything I can do?