I messed around in mysql today: unistalled / reinstalled mysql / mariadb - next thing I know after a reboot Korganizer is dead because Akonadi won’t start.
Finally after
sudo dnf remove -y korganizer
sudo dnf remove -y akonadi-server
sudo dnf install -y akonadi-server
sudo dnf install -y korganizer
everything’s back up and running. Good look with Ms Akonadi!