Install kaccounts-integration by entering the following commands in the terminal:
sudo apt update sudo apt install kaccounts-integration
Description:
System to administer web accounts
Small system to administer web accounts for the sites and services across the Plasma desktop, including: Google, Facebook, Owncloud, IMAP, Jabber and others.
Homepage: https://projects.kde.org/projects/kde/kdenetwork/kaccounts-integration
Version: 4:17.12.3-0ubuntu1
Section: universe/kde