You cannot lookup components on a disposed ThreadSafeComponentManager  
java.lang.IllegalStateException: You cannot lookup components on a disposed ThreadSafeComponentManager at org.ametys.runtime.plugin.component.ThreadSafeComponentManager.lookup(ThreadSafeComponentManager.java:116) at org.ametys.core.ui.SimpleMenu$GalleryGroup._resolveGalleryItems(SimpleMenu.java:596) at org.ametys.core.ui.SimpleMenu$GalleryGroup.getItems(SimpleMenu.java:574) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382) at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.ametys.core.ui.SimpleMenu.getReferencedClientSideElements(SimpleMenu.java:275) at org.ametys.core.ui.RibbonConfigurationManager._saxReferencedControl(RibbonConfigurationManager.java:1264) at org.ametys.core.ui.RibbonConfigurationManager.saxRibbonDefinition(RibbonConfigurationManager.java:828) at org.ametys.plugins.core.ui.WorkspaceGenerator.doGenerate(WorkspaceGenerator.java:186) at org.ametys.web.workspace.WorkspaceGenerator.generate(WorkspaceGenerator.java:91)