Kali Template dead

Hi my kali Template and my VM cannot be opened anymore it starts but there isn’t any further windows opened

What should I do?

Check the logs in dom0:

$ less /var/log/qubes/<vm-name>.log

Move up and down with arrow keys, go to the end with SHIFT + G, exit with Q.

Feel free to report the last errors that you see.

Also, did you upgrade some packages last time you had access to the vm?

Give us enough information to be able to help you.
Where did you get this template?
Have you made any changes?
Have you updated or upgraded packages?
Does the kali qube keep running, even with no windows?
Are you able to connect using qvm-console-dispvm ?
Any other relevant information?