Hi.
Same issue on my machine after upgrading it to Debian 11.
The file .local/share/akonadi/Akonadi.error contains
2021-08-24T18:02:17 [WARN ] default: Connecting to deprecated signal
QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
2021-08-24T18:04:38 [WARN ] org.kde.pim.akonadicontrol: ProcessControl:
Application '/usr/bin/akonadiserver' returned with exit code 253 (Errore
sconosciuto)
2021-08-24T18:05:39 [WARN ] org.kde.pim.akonadicontrol: ProcessControl:
Application '/usr/bin/akonadiserver' returned with exit code 253 (Errore
sconosciuto)
Thanks,
Matteo
