Error Drawing Availability

Help
1

Hello!

I’ve a problem with availability graph. On every device I just have error drawing graph. Maybe I need to unlock this but I can’t find this information on docs and community. I have this error on every Libre installation.
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For sure I have enabled this on poller module.
It work’s when I go to device but I want to get information from all devices:

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2

as i know it’s a know problem for many graphs (if you check others)

to see availability go on to the device you want to take a look on, click Tab “Graph” and there Availability and you should see the Availability Rate of the Device