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org.apache.wicket.WicketRuntimeException: Method onRequest of interface org.apache.wicket.behavior.IBehaviorListener targeted at org.apache.wicket.ajax.markup.html.AjaxLink$1@f540aef on component [SelectionRemovalLink [Component id = removeSelected]] threw an exception

 

 400: Could not locate a layer or layer group with id LayerInfoImpl--59622e45:18388862b60:-439 within GeoServer configuration, the GWC configuration seems to be out of synch

 Solution: find the relevant xml configuration file, delete