Myhub view of Fusion360 file won't open

[kCPZE3]

I have very conveniently used this feature for letting clients view models, I was surprised to get the error message attached.

[jhackney1972]

So what was the "exact" file extension of the file your are trying to view?  You say it was a Fusion 360 file, but what is the exact extension.

[kCPZE3]

The File is at this link:
https://a360.co/34t7W5g

I'm using the same path that I have for dozens of files, "share public
link" in Fusion, client opens the file in a browser. Does that answer your
question?

thanks!!