Just upgraded to Confluence 9.0.1 and my Sidebars are empty

[Mårten Woxberg]

On all of the Spaces I have on my  Test-server the Sidebars are empty after upgrading.

Not even the Cogwheel and the Space Tools menu is there.

If I go into Space Directory and select the (i) for any space, the Sidebar renders but without any shortcuts or Page Tree

Logs says this:

2024-08-09 10:21:19,040 ERROR [ajp-nio-0.0.0.0-9809-exec-9] [plugin.descriptor.web.ConfluenceWebInterfaceManager] getHtml Failed to render web panel: com.atlassian.plugin.web.descriptors.DefaultWebPanelModuleDescriptor$ContextAwareWebPanel@3921e481 -- page: 170655840 | referer: https://confluencetest.test.ltu.se/display/DOS/Infrastruktur+och+Teknisk+Support | traceId: 3a25d64e6c57ccb1 | userName: woxwox | action: viewpage | url: /display/DOS/Infrastruktur+och+Teknisk+Support java.lang.NullPointerException: Cannot invoke "java.util.Map.size()" because "<parameter1>" is null

The entire sidebar is missing from the HTML. Including the hidden parts about not being able to access the sidebar:

In 9.0.1

Versus 8.9.1

[Mårten Woxberg · Accepted solution]

The Answer was that the Custom Page Layout has changed in 9.0 so the code that was there from Atlassians side did no longer work.

Resetting the Custom Page Layout and re-applying our changes fixed the issue

[Marc - Devoteam]

Hi @Mårten Woxberg 

I hope one of these KB articles can help you out.

1. https://confluence.atlassian.com/confkb/error-rendering-webpanel-no-renderer-found-for-resource-type-300814261.html 
2. https://confluence.atlassian.com/jirakb/error-rendering-webpanel-1333331815.html 

[Mårten Woxberg]

Thank you, but no.

Setting wait didn't help and I don't have any problems with Modules not being loaded so the second link also didn't solve the problem.