[Observium] Poller wrapper history graphs not updating

Hi!

I have moved an instance from a physical server to a VM by moving over the database & RRD files + Observium $HOME.

All works except one minor thing : The poller wrapper history (/pollerlog/ page) graphs do not update anymore. Also the RRD files do not update their timestamp since I moved the files to the new VM.

The poller discovery/timing part of the same page does work properly, so it's only the top two graphs missing (or rather the graphs are there, but no new data is being added).

Any idea why ?

/Jesper