Hi,
Please remove the packages:
- plasma-applet-calendar https://aur.archlinux.org/packages.php?ID=58358
- plasma-applet-google-contacts
https://aur.archlinux.org/packages.php?ID=57701
- plasma-applet-google-tasks
https://aur.archlinux.org/packages.php?ID=57700
They have been renamed to plasma-applet-akonadi-{calendar,contacts,tasks} by
the developer.