Install ukui-indicators by entering the following commands in the terminal:
sudo apt update sudo apt install ukui-indicators
Description:
notification area use to show time, network, etc.
A small applet to display information from various applications consistently in the panel. . The indicator applet exposes Ayatana Indicators in the UKUI Panel. Ayatana Indicators are an initiative by Canonical to provide crisp and clean system and application status indication. They take the form of an icon and associated menu, displayed (usually) in the desktop panel. Existing indicators include the Message Menu, Battery Menu and Sound menu.
Homepage: https://github.com/ukui/ukui-indicators
Version: 1.1.1-0ubuntu1
Section: universe/x11