Hi,
since I have the same issue, I tried to install nearly all of the available widgets, including the battery status, Garbage Collection, Keypad, etc. All of which without success…
It’s allwas the same error message:
[ERROR] [munity.CommunityUIWidgetAddonHandler] - Unable to parse YAML: Cannot deserialize value of type java.util.Date from String “Oct 28, 2021, 10:52:35 AM”: not a valid representation (error: Failed to parse Date value ‘Oct 28, 2021, 10:52:35 AM’: Unparseable date: “Oct 28, 2021, 10:52:35 AM”)
at [Source: (StringReader); line: 37, column: 12] (through reference chain: org.openhab.core.ui.components.RootUIComponent[“timestamp”])
My installation is RPi 3B+ with upgraded OH vom 2 to 3.2 via 3.1
So, I don’t think it’s a problem with the widgets, but could it be a problem with date format? My region is Austria.