Can't run `CodeActionMenu` in visual mode

[Andrew15-5]

When I select a range and run :'<,'>CodeActionMenu I get:

E481: No range allowed

But if I do this:

M.nvim_code_action_menu = {
  v = {
    ["<leader>ca"] = { "<Cmd>CodeActionMenu<CR>", "LSP Code action" },
  },
}

Then it suddenly works for the selected range. Can you explain why I'm getting an error and how to trigger the command manually in the visual mode?