java.lang.IllegalArgumentException

A child with id 'sideHeaderColumns' already exists: [OrganisatieMeeteenhedenTree [Component id = boom]]

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  • Stack trace

    • java.lang.IllegalArgumentException: A child with id 'sideHeaderColumns' already exists: [OrganisatieMeeteenhedenTree [Component id = boom]] at org.apache.wicket.MarkupContainer.add(MarkupContainer.java:182) at org.apache.wicket.extensions.markup.html.tree.table.TreeTable.addHeader(TreeTable.java:237) at org.apache.wicket.extensions.markup.html.tree.table.TreeTable.onBeforeAttach(TreeTable.java:323) at org.apache.wicket.extensions.markup.html.tree.AbstractTree.onBeforeRenderInternal(AbstractTree.java:612) at org.apache.wicket.extensions.markup.html.tree.AbstractTree.access$300(AbstractTree.java:67) at org.apache.wicket.extensions.markup.html.tree.AbstractTree$TreeItem.onBeforeRender(AbstractTree.java:341) at org.apache.wicket.Component.internalBeforeRender(Component.java:949)

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