Setting up python3-libapparmor (2.10.95-0ubuntu2) ...
Setting up python3-gdbm:amd64 (3.5.1-1) ...
Setting up python3-gi (3.20.0-0ubuntu1) ...
Setting up python3-apt (1.1.0~beta1build1) ...
Setting up python3-dbus (1.2.0-3) ...
Setting up python3-pkg-resources (20.7.0-1) ...
Setting up mysql-server-5.7 (5.7.12-0ubuntu1) ...
Installing new version of config file /etc/apparmor.d/usr.sbin.mysqld ...
Installing new version of config file /etc/init.d/mysql ...
Installing new version of config file /etc/init/mysql.conf ...
Installing new version of config file /etc/logrotate.d/mysql-server ...
Installing new version of config file /etc/mysql/debian-start ...
insserv: warning: script 'screen-cleanup' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `screen-cleanup'
insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `screen-cleanup'