I installed OpenMediaVault on my Raspberry Pi 3, and when going through the configuration, I noticed that the selected timezone was wrong, so I modified it to match my timezone. Since doing this, the graphs for everything under the Performance Statistics tab have been acting strangely.
When I first boot the system, the "Last updated" timestamps on the graph are from December 2015, and there is data showing even though the OMV installation is only a day old at this point. After I hit the "Refresh" button, the timestamps on the graph update, but no data is shown, and all I see is this on every graph:
I rely on these graphs for monitoring the server's hardware usage, so it essential that they are working properly. What exactly has happened to cause this to happen, and how can I fix it?