Step 2 Trying to update umbrel on ubuntu vm (from the Umbrel installation directory) appears this on my terminal:
:~/umbrel$ sudo tar -cvf umbrel-data.tar -C /path/to/umbrel/installation .
[sudo] password for ku:
Sorry, try again.
[sudo] password for ku:
tar: /path/to/umbrel/installation: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
Can anybody give to me some light on what I am doing wrong? thanks in advance.