BadFunctionCallException: sieveEnabled is not a valid attribute

Hi,
I tried to update my NC and receive this error.

Aktualisierung auf 20.0.8

BadFunctionCallException: sieveEnabled is not a valid attribute

Detaillierte Protokollmeldungen

Update vorbereiten

Log-Level auf “debug” gesetzt

Wartungsmodus eingeschaltet

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BadFunctionCallException: sieveEnabled is not a valid attribute

It would be greatly appreciated If somebody has an idea how to fix this. I have no access to the NC via the Webbrowser. It always tells me to Update.

Thanks