Hi. I had all KDE PIM apps installed and perfectly working but after I installed MySQL it they throw the error: Akonadi personal information management service is not operational. after a little investigation, I found out that Kontact, Kmail and other applications use Akonadi and mysql-common version 5.8 is its dependency and me installing MySQL version 8.0 added the PPA that broke its dependency. then I thought if I install MySQL version 5.7 it would fix the problem but after you install MySQL 5.7 if you try to install any KDE PIM application it requires you to remove mysql-server and its dependencies. so any ideas on how to have both mysql and kontact installed????? please help