error messages if semanticTokens are enabled about coc.nvim HOT 4 CLOSED

function! s:add_highlights_timer(bufnr, ns, highlights, priority) abort
  let hls = []
  let next = []
  for i in range(0, len(a:highlights) - 1)
    if i < g:coc_highlight_maximum_count
      call add(hls, a:highlights[i])
    else
      call add(next, a:highlights[i])
    endif
  endfor
  call s:add_highlights(a:bufnr, a:ns, hls, a:priority)
  if len(next)
    call timer_start(30, {->s:add_highlights_timer(a:bufnr, a:ns, next, a:priority)})
  endif
endfunction

function! s:add_highlights_timer(bufnr, ns, highlights, priority) abort
  let hls = []
  let next = []
  for i in range(0, len(a:highlights) - 1)
    if i < g:coc_highlight_maximum_count
      call add(hls, a:highlights[i])
    else
      call add(next, a:highlights[i])
    endif
  endfor
  if bufwinnr(a:bufnr)!=-1   " check if buffer still exists     
    call s:add_highlights(a:bufnr, a:ns, hls, a:priority)
  endif
  if len(next) && bufwinnr(a:bufnr) != -1 "check if buffer still exists
    call timer_start(30, {->s:add_highlights_timer(a:bufnr, a:ns, next, a:priority)})
  endif
endfunction

function! s:funcs.buf_add_highlight(bufnr, srcId, hlGroup, line, colStart, colEnd, ...) abort
  if a:srcId == 0
    let srcId = s:max_src_id + 1
    let s:max_src_id = srcId
  else
    let srcId = a:srcId
  endif
  let bufnr = a:bufnr == 0 ? bufnr('%') : a:bufnr
  let type = srcId == -1 ? a:hlGroup : a:hlGroup.'_'.srcId
  let types = get(s:id_types, srcId, [])
  if index(types, type) == -1
    call add(types, type)
    let s:id_types[srcId] = types
    if empty(prop_type_get(type))
      call prop_type_add(type, extend({'highlight': a:hlGroup}, get(a:, 1, {})))
    endif
  endif
  let end = a:colEnd == -1 ? strlen(get(getbufline(bufnr, a:line + 1), 0, '')) + 1 : a:colEnd + 1
  if end < a:colStart + 1
    return
  endif
  let id = s:generate_id(a:bufnr)
  try
    call prop_add(a:line + 1, a:colStart + 1, {'bufnr': bufnr, 'type': type, 'id': id, 'end_col': end})
  catch /^Vim\%((\a\+)\)\=:\(E967\|E964\)/ 
    " ignore 967 and 964
  endtry
  if a:srcId == 0
    " return generated srcId
    return srcId
  endif
  return v:null
endfunction

 /^Vim\%((\a\+)\)\=:E967/

 /^Vim\%((\a\+)\)\=:\(E967\|E964\)/