Install libapache2-mod-apparmor by entering the following commands in the terminal:
sudo apt update sudo apt install libapache2-mod-apparmor
Description:
changehat AppArmor library as an Apache module
libapache2-mod-apparmor provides the Apache module needed to declare various differing confinement policies when running virtual hosts in the webserver by using the changehat abilities exposed through libapparmor.
Homepage: http://apparmor.net/
Version: 2.12-4ubuntu5
Section: web