Restore Backup loads infinite

When I try to restore a backup via the UI, it takes ages to load and does not seem to make any progress.

I have clicked on "Show What Will Be Restored" about 8 hours ago now. Is it likely that there is progress or should I just restore the backup from commandline with "virtualmin restore-domain"?

Status: 
Closed (fixed)

Comments

It is even not a big backup, it is about 5 GB and includes 1 server with 2 sub servers.

Update:

In the browser console I see:

Failed to load resource: the server responded with a status of 500 (Perl execution failed)

And the output was:

Error - Perl execution failed Experimental keys on scalar is now forbidden at /usr/share/webmin/virtual-server/restore.cgi line 160.

It worked well over the commandline.

Virtualmin 6.06 should have fixed this issue..