pnp4nagios is not showing any new graphs since the update from php 5 to 7.
old graphs are still shown, but data exists only before 5 days (time of update).
/var/spool/icinga2/tmp shows 2 files: host-perfdata und service-perfdata, both flapping between 0 and some bytes, timestamp is not older then 5 minutes.
/var/spool/icinga2/perfdata is showing files for some seconds
/var/cache/rrdcached is showing 2 files 5 days old (time from the update).
Any tip where to dig in?