OH3: Background Image on Location page or rearranging - shows "Error while saving page: Server Error"

Setup, Configuration and Use Items & Sitemaps
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1

  • Platform information:

    • Hardware: OH3 in LXC
    • OS: Debian
    • Java Runtime Environment: as per recommendation for OH3
    • openHAB version: OH3 latest release

  • Issue of the topic:

I tried to change the background image of the automatically generated “Location” tab tiles as well as tried the rearrange button, whereas both leads to an error: “Error while saving page: Server Error”.

I cannot find anything in the usual OH logs on said error.

Any direction on how to solve this? Might it be a permission issue (whereas I did a normal apt install)?

2

No solution, but I do have the same issue!

For me - strangely - if I restart OH3, edit a page (any page) and save it then, it works once - then if I try to save again (even without changing anything) I get the server error.

3

Some more information, after trying to analyze this in the browser:
It seems to be a HTTP500 Server Error and has to do something with the REST API, as it calls this part of the API:
http://192.168.xxxx:8080/rest/ui/components/ui:page/page_9ba2347b40

The actual error (I think, I’m not a programmer):

SyntaxError: JSON.parse: expected property name or ‘}’ at line 1 column 2 of the JSON data

“{“error”:{“message”:“For input string: \”._1609362779309\”",“http-code”:500,“exception”:{“class”:“java.lang.NumberFormatException”,“message”:“For input string: \”._1609362779309\"",“localized-message”:“For input string: \”._1609362779309\""}}}"

Hope that helps someone to localize the error.

4

Thanks Pezzi42!
Sadly made no progress on fixing this.

5

Maybe you can try this:

login to your server with ssh
run openhab-cli console
set loglevel to debug:
log:set DEBUG org.openhab
watch the log:
log:tail org.openhab
try to save again and you should see a stack trace in the tail maybe with better error information.

1 Like
6

Thanks!
That helped a lot as I was able to pin point the error.
If someone has maybe a similar issue, for me it was coming from having another Page UID called “home”.

It seems that the auto-generated Location page also uses this UID (?).

java.lang.IllegalArgumentException: Cannot add UI component to namespace ui:page, because a component with same UID (home) already exists.

7

Thanks from me, too - similar issue, there was apparently an old leftover page in the /jsondb/backup folder which caused the problem.

in my case:

08:46:36.563 [DEBUG] [.io.rest.JSONResponse$ExceptionMapper] - Exception during REST handling.
java.lang.NumberFormatException: For input string: “._1609411310964”

That input string was the pre-fix for the corrupted backup file.

8

don’t forget to set the log level back to info or your log will grow fast:
log:set INFO org.openhab

I had the similar issue withe the ‘home’ but i can’t reproduce it. The ‘home’ Page seems to be the second default page. I think it appears if you modify the default generated location, things or equipment section.
When i select the site for edeting over ‘page’ from settings menu the error went away. There are now two sites, layout and home.

9

Thanks, yeah, I changed it back already to INFO.

But can confirm, I got now a “page” in the list with UID “home” as well, which was not there before.
And before I had my own page with UID “home” design, hence I guess the conflict.

10

Hi gents and Happy New Year,

I tried to find in community and found out only this topic is looks like for my issue.

I have OH3 and migrated to it from OH2.
I created a simple model in Modeling but when I open “home” page or it is called “overview” page there is nothing on it, just blank page.
In that time I opened it in “Run Mode” and it shows me what i need. The same situation with Semantic Model and auto generated “home” page. In Run Mode all is fine but I see blank pages (not active) Locations, Equipment, Properties in default page on http://myopenhabserver:8080

Blank Overview Page

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With regards

Alexey

11

Sorry, I can post only one media in one post :confused:

Overview Page in Run mode

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12

Hi there,

I discovered interesting option that i’ve never see before:

It placed in Help & About in left menu, scroll down to bottom and you can see * Simple navigation bar on home page

If it Turns On all looks fine and if it Turns Off you can’t see Overview, Locations etc, only blank pages of it.

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Thanks for everybody, my question is clear :ok_hand: