Topic like boomerang: Attempting to send a state update of an item which doesn't exist: undefined

[ra_dzik]

When I refreshing Main Page (main UI) then I see in the logs:

18.12.2024 20:56	 [WARN ]	 [e.internal.SseItemStatesEventBuilder] - 	Attempting to send a state update of an item which doesn't exist: undefined

The problem is not related to new version of OH, in previous version I had the same problem, but now I used new tool in OH 4.3 - Log viewer.

And I see in the log information (sorry for screenshot it’s difficult to copy text from logviewer):

How to identify the element of UI which is “undefined”?

[hmerk (Hans-Jörg Merk)]

Did you see this

Item update warning - how to trace

This is a warning that almost all the time comes from MainUI. It is completely harmless and can be ignored if you choose. The warning itself is an indication that in some custom widget you are using a widget expression that should resolve to or include an item name (e.g., items[someVariable + or + expression]) but resolves to undefined instead of a valid item name. You can narrow down which widget is causing the problem by noting which page view causes the warning to show up and then systemati…

[ra_dzik]

Could the reason be the use of displayStatus (which item does not have) instead of status?

[rlkoshak (Rich Koshak)]

@ra_dzik

And I see in the log information (sorry for screenshot it’s difficult to copy text from logviewer):

Use the filter to reduce the logs shown down to what you want to share and use the copy icon at the bottom to copy those to the clipboard.

You can pause the logs if needed while setting up the filter.

@ra_dzik

Could the reason be the use of displayStatus (which item does not have) instead of status?

I don’t think so because the warning says the item is undefined.

[hmerk (Hans-Jörg Merk)]

@ra_dzik

Could the reason be the use of displayStatus (which item does not have) instead of status?

Widgets should use the fallback to .state if .displayState is not found.
This can simply be done with the shortcut

@itemName

[ra_dzik]

Thank you gentlemen for your help