No data points in graphs

Hi there,

just updated to version 5.2.4 and now I do not get any data shown inside Grafana.
I am using influx with telegraf and collectd.
According to the logs everything is working fine, but simply do not get any data points anymore since the update.

Checking telegraf:
telegraf -test -config /etc/telegraf/telegraf.conf (I can see data)

Connection to database is ok:

I am stuck at this point.