rying to use the new calendar functionality in Plasma 5.7.
Right click on clock in system tray and select digital clock settings, then click on holidays and get the error message . . .
Error: Could not load: file://usr/lib64/qt5/plugins/plasmacalendarplugins/holidays/HolidaysConfig.qml:29 module "org.kde.kholidays" is not installed
Have added kholidays in Yast but the message persists.

What else needs to be installed to get the holiday functionality in the calendar working.