File Failed to Open

I have a landscape design file I am working on but now I am unable to open it, every time I try i get the message “Failed to open document”

This was something I started building in 2021 then upgraded to 2022, but I haven’t had any issues with my others files.
I have already tried using the backup and I get the same response.

How can i recover this?! the file is attached.
Earley Basemap.skp (4.3 MB)

The usual things I would try are not working. I have asked a developer to look at your file.

Thank you

Here is what he was able to recover, hopefully it’s a useful amount.

Earley Basemap (fixed).skp (2.3 MB)

thank you!