Error cause to loose information

MIT App Inventor Help
1

Good day, I was working and suddenly an error came up and my laptop froze for a few seconds.
I looked again and half of my project gone.

Had look, and all the blocks still there but design part is gone.

Any help somehow?

Or must i start all over again

The auto save saved as is already

2

You might just close your Project and restart it. That might perform a miracle when the compiler restarts.

If not working yet, just load the backup aia file you have been routinely saving and recover most of your Project.