Alert state no data not working correctly

Hey everyone,

Grafana Version: 10.0.2
Selfhosted - InfluxDB

My Problem is actually a little bit weird.
I check the uptime of a server. In the current status, the server is offline and
is not delivering any data. Normally an alert should also appear in this case. Howerver, nothing happens. If i check the Alert with the preview function, it says “no data” instead of normal or alerting.
Under the alert status conditions, I select “Alerting” for both fields. I understand that even in this case an alert should be sent if we get “no data”.
The alert condition is set to take effect when the uptime is less than 60 seconds.
But the State is in this case “Normal”

Have anyone an idea?