MailClient.Accounts.ConnectionException: '@'

DoneWithExchange

Can someone please provide some insight with this error.
This issue is affecting 1 email account in MailCow.

email@email.com [CalDAV] MailClient.Accounts.ConnectionException: ‘@’ is an unexpected token. The expected token is ‘;’. Line 2, position 706.
—> System.Xml.XmlException: ‘@’ is an unexpected token. The expected token is ‘;’. Line 2, position 706.

ETNyx

Not properly escaped data, maybe corrupted data. Inspect the XML by yourself.