Org.kde.plasma.private.quicklaunch

I downloaded the widget “Panel Spacer Extended” but cannot run it. If I click on it, I get the following message:

file:///home/pedro/.local/share/plasma/plasmoids/luisbocanegra.panelspacer.extended/contents/ui/main.qml:13:1: module "org.kde.plasma.private.quicklaunch" is not installed

Can I install this module directly to Tumbleweed?

Thank you.

Is kdeplasma6-addons installed?
If not, install it:
sudo zypper in kdeplasma6-addons

And how and from where did you download this widget? Because there are two versions avaialble, one for Plasma 5 and one for Plasma 6. The Plasma 5 version won’t run on Plasma 6.