If you have just upgraded your LogScale installation, this error indicates that you have upgraded to a version that is unable to migrate the existing data files to the new upgraded version.

Try upgrading to a lower version first. Check the details on Release Notes; the Upgrades From column will indicate which version you can upgrade from. Depending on your version, you may need to upgrade multiple times to reach your desired version. Upgrading in this way will ensure that your existing data files and configuration are migrated during the upgrade process.