Comment # 12 on bug 1100765 from . .

If I start gimp from the KDE menu, I also get the error (see below)
when using gimp File > Create > Screenshot > Snap:

Error:
....
execution error for 'screenshot'
gdbus.error:org.freedesktop.dbus.error.unknownobject
no such path '/screenshot'
....

I do not get the error if I start gimp from the command line using:

>From the command line:
....
dbus-launch gimp-2.10
....

When running qdbus-qt5 org.kde.KWin /Screenshot:
....
Error: org.freedesktop.DBus.Error.UnknownObject
No such object path '/Screenshot'
....

The third menu option on the Screenshot window, "Select a region to grab", is
also missing.

If you work a lot in gimp, the screenshot feature is really convenient, as is
the xsane option which also appears under File > Create. All multimedia, if you
will, in one spot.

Tumbleweed: 20190322
Gimp: 2.10.8