Install libpackagekitqt5-1 by entering the following commands in the terminal:
sudo apt update sudo apt install libpackagekitqt5-1
Library for accessing PackageKit using Qt5
PackageKit allows performing simple software management tasks over a DBus interface e.g. refreshing the cache, updating, installing and removing software packages or searching for multimedia codecs and file handlers. . This package provides a library to access PackageKit using Qt.