Bug skyfactory 3 server not working

so I turned off my laptop while the server was up and people were on it and when I turned my laptop back on the server wouldn't load and crash so I reinstalled the modpack and java offline 64bit and now when booting it up I just see u\0000 hundreds or maybe thousands of times

 

Turning the machine of while the server is running or a power outage can cause this, your Minecraft server didn't manage to save the contents from ram -> disk.

Restore your world to a backup previous to this incident. (see folder /backups/...zip-files)

 

well the thing is i deleted the original folder with the backups within

 

Then you're out of luck - reset your world and start over.

Also I'm wondering, why did you delete your backups?