I ran hugo --logLevel info and it showed the deprecations I need to change. One of them was .Params.description to .Description but site.Params.description throws the error execute of template failed at <site>: can’t evaluate field Description in type *page.siteWrapper. I guess I shouldn’t have bulk edited, but is this expected or a bug?
The deprecation is on the Page (not Site), so you need to replace .Params.description=> .Description. (assuming the “dot” is a Page).
I went file by file. Replaced everything deprecated.