UNKNOWN_EXCEPTION, INVALID_TYPE: IsInboxTermsOfUseAccepted FROM SalesforceIqUser WHERE InternalUserId ^ ERROR at Row:1:Column:61 sObject type 'SalesforceIqUser' is not supported.

You are using a Vicasso application such as Email to Case Premium or Change Case Ownership Plus, and experience the following error: Sending e-mail with new comment failed: SendEmail failed. First exception on row 0; first error: UNKNOWN_EXCEPTION, INVALID_TYPE: IsInboxTermsOfUseAccepted FROM SalesforceIqUser WHERE InternalUserId ^ ERROR at Row:1:Column:61 sObject type 'SalesforceIqUser' is not supported. If you are attempting to use a custom object, be sure to append the '__c' after the entity name. Please reference your WSDL or the describe call for the appropriate names.: []