Comment 4 for bug 1714092

Workaround: change line 50 of /usr/share/qreator/qreator/qrcodes/QRCodeLocationGtk.py from

        latitude, longitude = get_current_location()

to

        latitude, longitude = 0, 0

Obviously this won't survive apt updates, but the package seems to have been abandoned so it's not likely to receive updates anyway.