I have OH installed on Synology. Previous version (2.1) was ok, but today I upgraded to 2.2. I was able to install all the bindings etc., but I can not see the graphs. Any of them. It was fine on 2.1 version.
@Kees_Schouten Can you tell me which version of OpenHab and Java are you using? I can’t confirm it yet, but I think this started when I’ve updated Java - my older version of OpenHab doesn’t work as well now.
Java version : 1.8.0-151
OpenHab version : 2.3.0.001-SHAPSHOT
Update! It works I’ve update my java to:
Version: 1.8.0_162
To check your java version on synology:
Package manager -> search for “java” -> click on “Open” -> see dialog with version. At first it didn’t worked but when I restarted my synology server it suddenly worked!
I had the same issue with graphs not showing on an OpenHAB installation on a Synology NAS with the error message in openhab.log “Chart generation failed: null”.
Thanks to this post, I updated my java version (which was 1.8.0-151 before and is 1.8.0-171 now),
and after a restart of the OpenHAB package, it works fine now.
One year later, same issue?
I have a DS918+ where I run OpenHAB in a docker container just fine.
Now I also want to run OpenHAB on another location where I have a DS214+ which doesn’t support docker and therefore I have installed the synology package.
I copied config files from DS918 to DS214 (and adapted where necessary) and while it’s basically working with the synology package I do not get Charts rendered in the Basic UI.
Since this is a year later, java version is now at 1.8.0_212 already.