I am getting expected exactly one file named index.html, found 0 when I try to upload and share my game
firstly welcome to the community
the folder that your webGL build is in, does it have the index.html file there?
and is it that folder you are uploading that has the index in the root of it?
expected exactly one file named index.html, found 0 simmer.io
I had the same issue
I was uploading the files in the folder
The issue was solved with drag and drop to the folder that contains the files.