Openhab sitemap crashed

After I tried to update to openhab 2.1 I switched back to a 2.0 Backup because the update crashed my whole sitemap for no reason.

No, after I installed my backup my sitemap is back online, but a few groups don´t work anymore. For example when I click on “Kitchen” it opens the kitchen group but it´s totally empty. The same for a few more groups. I already rebooted my Pi a few times but the problem persists. I don´t want to post my whole sitemap here, but maybe this is a common problem and maybe there is a workaround? Any help is very appreciated!!!

Thanks in advance!!

Crashed your sitemap how? What errors did you see in the logs?

It likely was a syntax error that you used to be able to get away with but is no longer allowed.

If the Group is empty then that implies that your Group memberships are messed up. Verify that your .items files or Items in PaperUI are as they should be.

I found out that when I add this item I get into trouble:

Chart item=TempWz period=W refresh=10000 service=mysql (FF_Wz_Sensor)

That´s my first approach to add a chart from my MySQL DB. When adding this line I get the below errors from log:

13:15:19.830 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.833 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.836 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'TempK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.841 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'TempK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.844 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'TempK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.847 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.850 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.853 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'HumiK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.858 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'HumiK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.860 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'HumiK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.864 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.867 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.870 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKL' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.874 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKL' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.877 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKL' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.880 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.884 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.887 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKR' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.891 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKR' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.894 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'FensterKR' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.897 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.900 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.903 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_batt' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.908 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_batt' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.911 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_batt' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.914 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.917 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.920 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_Update' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.925 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_Update' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.927 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'node4_Update' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.931 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.933 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.935 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchNameK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.938 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchNameK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.940 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchNameK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.942 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.944 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.946 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchVerK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.948 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchVerK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.950 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'SketchVerK' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.952 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.954 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.956 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Katzenklo' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.958 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Katzenklo' for widget org.eclipse.smarthome.model.sitemap.Text
13:15:19.960 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'Katzenklo' for widget org.eclipse.smarthome.model.sitemap.Text

Just to be clear, you are adding the line to your Sitemap or your .items files?

That is a mostly correct Sitemap entry. The (FF_Wz_Sensor) is invalid for the sitemap though.

If that is in your .items file it is completely incorrect and likely is causing that .items file to be rejected.