I did an upgrade from ubuntu 16.04 to 18.04. by this means I needed to update the My SQL client
version in order to run several programs. But now the cqrlog does not start and shows this message:
"Error during connection to database: TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.7.23)."
It somehow needs the older SQL client, Ho can I fix this issue