For the past year or so I have been reminding folks that MySQL 5.6 reaches End of Life Status in ONE MONTH!! No more updates or security fixes! Nostalgia is a fine things and I like antiques but not for my database!
So if you are on 5.6 please upgrade to 5.7 -- https://dev.mysql.com/doc/refman/5.7/en/upgrading.html and consider going to 8.0 - https://dev.mysql.com/doc/refman/8.0/en/upgrading.html plus there is a5.7 to 8.0 upgrade checker in the new shell - https://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-utilities-upgrade.html
