I have created a Power Page site today and would like to create some web files, but when I go to the management page, this happens.
I have no idea what this error meant, it's not likely to be a permission issue since the account has system administration role in the environment, I also tried with the code editor, I could create files under web-file folder, but as soon as I leave/refresh, the files are all gone. I really have no idea what's happening, thanks in advance for any help.