We're seeing a recurring issue in Author (AEM 6, SP2, Oak 1.0.11) when a new workflow is started on a resource it fails and spits out an exception. This seems to happen every couple of days. Previously we've been able to run TarMK online compaction, but today that does not seem to be helping. It doesn't matter what workflow it is, Request for Activation, Request for Deactivation, DAM Asset Update, etc. All workflows return an error similar to the log snippet attached. Any ideas on how to resolve this and prevent it from happening again would be appreciated.