I used Neon for a while. Again, can you please give the needed information. If the password dialog shows, at the left click on "expand"/"show more" and you see the exact action that is executed.
Then have a look at the rules in my linked repo, and replace the action in "libvirt" with that, and the group with "wheel"
(Use groups and send me the output, no idea if the sudo users are in the sudo group on Ubuntu)
Then send that rule, embed it in
```
Rule
```
To format correctly. I look at it and if it is correct, we go on.