Custom highlighting not working

[shauryagoel]

Steps to Reproduce:

1. Set the following config:

   return {
   "mei28/luminate.nvim",
   event = "VeryLazy",
   branch = "fix#7",
   config = function()
   require("luminate").setup({
     duration = 200,
     yank = {
       hlgroup = "IncSearch",
       guibg = "#f7c67f",
       fg = "#1a1c2c",
     },
   })
   end,
   }

2. Open a buffer and yank a text.

Expected Behavior:

The yanked text should be highlighted.

Actual Behavior:

The yanked text is not highlighted.

Additional Information:

Besides yanking, undo, redo, and paste are also not highlighted. However, if I remove the custom highlighting section in the config, all things are highlighted with the default colours.

Environment:

• Neovim version: 0.9.4
• This repo commit ID: 3291f13