If the Archer History Log Cleanup maintenance job is currently in progress or has previously only partially completed, then this error is displayed during login of a user account whose activity has been partially cleaned up.
This issue will be fixed in a later release.
Please run the out of the box History Log Cleanup job. This is an Archer maintenance job that is intended to run every day but may not be scheduling properly due to various reasons.
Job Engine Manager -> Menu button (top left) -> System Jobs
Check "Content History Log Cleanup" -> Queue Job -> Run Job Now -> Submit.
Please ensure this job goes into running jobs.
Note: In Archer versions prior to 6.8, the History Log Cleanup maintenance job may partially complete or fail in environments with extremely large data sets of history log. The job will then go into "Failed Jobs" (Ref: ARCHER-83557) This can be resolved by upgrading to Archer version 6.8 or later.