no saving allowed

So I've started some work on a new project, and apparently I cannot save anything. This is the first time in 11 years using Construct that I've had this happen.

When trying to save a single file, save a project folder, or download a copy, i get this:

And when I try to save it to cloud, I get this:

What is going on?

Press F12 and check error messages in console log - there may be more information.

Does this happen with a new blank project? Can you try a different browser? Maybe clearing browser data will help.

I have started a new project and can save normally...for now, at least.