Packed .blend files is empty

The whole of my packed .blend files is empty. I’m open the files and every time see the default cube. I have a bunch of backup files. 2GB or 1MB .blend doesn’t matter, it doesn’t show any objects, materials, or something. What is the problem?

Screenshots:
1: https://gcdn.pbrd.co/images/Im0LHeuf487J.png?o=1
2: https://gcdn.pbrd.co/images/aj9NFbzehGqx.png?o=1

Sorry for the English by the way

Thanks

Looks like a corrupted file to me, sadly :frowning: