WARNING {vim-wakatime}: unknown key <setup>

[alexventuraio]

I recently started configuring NeoVim for my Mac computer and added the waka-time plugin as stated in the README file. This is my plugin config:

return {
  'wakatime/vim-wakatime',
  lazy = false,
  setup = function()
    vim.cmd([[ packadd wakatime/vim-wakatime ]])
  end,
}

I get stats reflected in my dashboard so I think it is ok but I get this warning when running checkhealth. I think it has to do with this line from the code above setup = function():

- WARNING {vim-wakatime}: unknown key <setup>

Not sure how to fix it, I tried changing with config = function() but that errors out. Does anyone know whether or not it is an issue that should be fixed?