Not generating folds automatically

[V4G4X]

I installed it in my lazy config file as:

    { 'anuvyklack/pretty-fold.nvim', config = function() require('pretty-fold').setup() end }

It installs the plugin successfully.

But when I open a new nvim window in my codebase, traverse to my file, and try folding, I get:
E490: No Fold found

How do I go about fixing this?