Error CoreState.STARTUP

Hello guys,

After upgrading my home assistant on my nuc.
i upgraded to the following version and if i wanted to core to core-2021.6.6 it gives me the following failure.
Seems the system stucks in “CoreState.STARTUP”.
Appdeamon integrations can also not connect to home assistant and fileeditor does not automatically restart.
Hope anyone can support me.

21-06-21 14:00:15 INFO (MainThread) [supervisor.jobs] 'SnapshotManager.do_snapshot_partial' blocked from execution, system is not running - CoreState.STARTUP
21-06-21 14:00:23 ERROR (MainThread) [supervisor.utils] Can't execute update while a task is in progress

The solution was to change to beta channel and update supervisor to 2021.06.4.