Zammad Installation in endless loop checking Zammad-State

Hi. Hope you can help. After Zammad wasn’t reachable after latest update, I tried to re-install it. Now it is stuck in an endless loop, checking Zammad-State: 000.
I applied the fix mentioned here , but to no avail. It is stuck, even left in on overnight, still there.
Any help would be appreciated.

Regards,
Florian

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