This does not appear to be a Sketchup model! any fix for this error

Hello, my 14 hour project is broken, please help someone open my file, I have a spare save that won’t open either and i tried renaming skb file to skp and tried opening but that too failed

the file is in the link below and its 39mbps

If anyone can help please

https://we.tl/t-1oB1RPpufgmWr76A

For anyone who was going to take a look at the file, I did try it already. It’s all zeros, and the skb is 1/4 zeros as well.

Thanks for that. Saves wasting time.