Sketchup Error this does not appear to be a sketchup model

Helllo everyone, please help with this error on sketchup that said “this does not appear to be a sketchup model”. Recently I designing this and suddenly my computer was shut down. I can’t open either the main sketchup, nor the backup files. could you help me recover those files? atleast one of them can be recovered, it would be helpful since I didn’t have to start from zero again.

here is the link on gdrive you can try to repair:

Thanks a lot.

Unfortunately the .skp file is nothing but zeroes and the .skb file is about 76% filled with zeroes. There’s no rcovery available for either file. Were you also saving backup copies of the file to Trimble Connect?