External pages redirecting back to wordpress

So I've created a folder under my wordpress root directory containing simple vueJS html files and assets such that anyone can access them from a url like:

Mywordpress.com/externalfolder

My external folder however contains its own routes and url params so going to a url like Mywordpress.com/externalfolder/about should be handled in the page logic itself, entirely seperate from wordpress, but instead, wordpress redirects to 404.

How do i remove this behaviour and get the server to use whatever my external folder serves up, and remove wordpress from interfering with anything on the original /externalfolder/ path.