Timeshift restore

[TMG1961]

I got a problem with timeshift. I did a restore and no errors during the restore itself. But when the laptop booted after the restore i got the following message.
Pressing ctrl-d didnt work, the password i entered wasnt accepteted and a hard reboot didnt work either, just got the same screen back. I ended up having to do a complete fresh install.
Anyone have an idea what is causing this, because at the moment timeshift doesnt work for me.


This is the message: