Webflow Folders

but you cannot name a page INDEX…

which means you cannot have a default page in the folder.

No index.html allowed.

So… if you have a portfolio page…

you cannot have mydomain.com/portfolio (which defaults to mydomain.com/portfolio/index.htmll)

you have to use something like mydomain.com/portfolio.html (no folder)
or
mydomain.com/portfolio/view.html

This was a bug introduced around Jan / Feb 2016.

Prior to this… you could create an index page / slug.