@julien-f Plugin works! Thank you.

@Strebor
You can download it from here:
https://download-ib01.fedoraproject.org/pub/epel/7/x86_64/Packages/a/apcupsd-3.14.14-18.el7.x86_64.rpm
and install.
That is easiest way.
Or you may enable epel repository and install from it.

I had same issue.
doing: git clean -d -f
and then running yarn build again helped.

@olivierlambert problem was fixed. Thank you for help.

@olivierlambert I've set up XOA trial. Will see if problem appear.

@olivierlambert I have remade backup when I saw the problem.
It went without problems.
I will monitor this further and report if it occurs on other VM's

Ok I've figured out root cause.

My config override has only one option:
ignoreVmSnapshotResources = true

And I had to change it with adding
[selfService]

on a line below

Also I found out that override config for XO5 interface needs to have absolute paths to xo-web and @XenOrchestra in it. With relative paths it didn't work.