Hi Fleet users. We are currently investigating a critical bug in Fleet v4.35.0 affecting the upgrade process. Please pause any planned upgrades until a fix is patched. If you've already upgraded without an issue, you are not affected. Thanks and stand by for more information!

Is there anymore information available here?

The issue affecting some migrations to v4.35.0 has been resolved in v4.35.1. More information on the patch here: https://github.com/fleetdm/fleet/releases/tag/fleet-v4.35.1. Proceed with upgrading to v4.35.1 at your convenience. As always, please ensure you have a database backup before any upgrade.