Troubleshooting: "The resource cannot be overriden"

After backup from restored (from .gwbk file) after opening project in project designer there is an error message: Resource cannot be overridden.

The actual project inherits from another one, but I’m nit sure which resources should be overridden exactly.
I have tried to open project properties and to manually choose override, but some properties under Vision, like General, Launching and Login, it is not possible.
More detail error message is this:

java.lang.IllegalArgumentException: Resource cannot be overridden.
at com.inductiveautomation.ignition.designer.project.ResourceTreeNode.update(ResourceTreeNode.java:93)
at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.createResourceInternal(DesignerProjectTreeImpl.java:202)
at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.createResource(DesignerProjectTreeImpl.java:192)
at com.inductiveautomation.ignition.designer.project.DesignableProject.createOrModify(DesignableProject.java:170)
at com.inductiveautomation.perspective.designer.workspace.pageconfig.PagesConfigPanel.savePagesConfig(PagesConfigPanel.java:178)
at com.inductiveautomation.perspective.designer.workspace.pageconfig.PagesConfigPanel.onPagesConfigUpdated(PagesConfigPanel.java:163)
at com.inductiveautomation.perspective.designer.workspace.pageconfig.PagesConfigPanel$PageList$1.lambda$update$0(PagesConfigPanel.java:292)
at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)

Ignition v8.1.35 (b2023120517)
Java: Azul Systems, Inc. 17.0.8

It's the 'page config' resource - the configuration area you get when you first open the Perspective workspace.

I'm not actually sure how someone managed to mark it as not overridable; you may need to go into the project structure on disk to allow it to be overridden.

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Tip: you've posted the error message as a quotation using the > syntax. Instead, please see Wiki - how to post code on this forum. You can use the Hide Details syntax as well so that your post collapses to avoid overly long threads.

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OK, will do in the future.