The issue as outlined in [Support Guide] I’ve deployed my site but I still see "Page not found” is you do not have an index.html. Try renaming the R-Basics.html file to index.html.
The issue as outlined in [Support Guide] I’ve deployed my site but I still see "Page not found” is you do not have an index.html. Try renaming the R-Basics.html file to index.html.