Outlook 365 sync error

i get this every time is start the application
[Exchange Web Services] Synchronizing folder ‘[email protected]/Inbox’ failed due to the following error: An internal server error occurred. The operation failed., Property: [Calc:PersonId] PersonId, PropertyErrorCode: CorruptedData, PropertyErrorDescription: .

An Internal Server Error, is an error on your email provider’s server.

You will need to contact them for assistance with fixing it.

I have the same issue since updating to the last eMclient. Therefore it is hard to understand, why this should be a server side problem. - Simply because the message tells “An internal server error”