Install libnm-util2 by entering the following commands in the terminal:
sudo apt update sudo apt install libnm-util2
network management framework (shared library)
NetworkManager is a system network service that manages your network devices and connections, attempting to keep active network connectivity when available. It manages ethernet, WiFi, mobile broadband (WWAN), and PPPoE devices, and provides VPN integration with a variety of different VPN services. . This package contains a convenience library to ease the access to NetworkManager.