This bug was fixed in the package unity-settings-daemon - 15.04.1+19.10.20190921-0ubuntu3
--------------- unity-settings-daemon (15.04.1+19.10.20190921-0ubuntu3) focal; urgency=medium
[ Khurshid Alam ] * Fix gnome-update-wallpaper-cache build
-- Sebastien Bacher <email address hidden> Wed, 26 Feb 2020 23:42:39 +0100
This bug was fixed in the package unity-settings- daemon - 15.04.1+ 19.10.20190921- 0ubuntu3
--------------- daemon (15.04. 1+19.10. 20190921- 0ubuntu3) focal; urgency=medium
unity-settings-
[ Khurshid Alam ] wallpaper- cache build
* Fix gnome-update-
-- Sebastien Bacher <email address hidden> Wed, 26 Feb 2020 23:42:39 +0100