Help Needed! Skp File shows on preview but cannot be opened with Unexpected File Format

File Attached here. Any recovery possibly done will help! TIA so much!

In SketchUp Go (web)

works fine in SU23 pro too…

I see you’re using 23.0.397 which doesn’t have all of the latest fixes. And I’ve noticed that the online app no longer ‘repairs’ files. So to fix this file it was necessary to run it through a desktop version that would fix the file via the Model Info panel.

Here’s your link