I ran this command: install software-properties-common
It produced this output:
Setting up mysql-common (5.7.21-0ubuntu0.16.04.1) …
update-alternatives: error: alternative path /etc/mysql/my.cnf.fallback doesn’t exist
dpkg: error processing package mysql-common (–configure):
subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of mysql-client-5.7:
mysql-client-5.7 depends on mysql-common (>= 5.5); however:
Package mysql-common is not configured yet.
dpkg: error processing package mysql-client-5.7 (–configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
My web server is (include version): ubuntu 16.04