java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:4848/web1/remotejmx
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:506)
        at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1278)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1272)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:927)
        at com.sun.enterprise.admin.jmx.remote.comm.ServletConnection.receive(ServletConnection.java:106)
        at com.sun.enterprise.admin.jmx.remote.comm.MBeanServerMessageConductor.invoke(MBeanServerMessageConductor.java:62)
        at com.sun.enterprise.admin.jmx.remote.internal.RemoteMBeanServerConnection.queryNames(RemoteMBeanServerConnection.java:481)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.initialize(AdministrationService.java:176)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.<init>(AdministrationService.java:110)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIAdministrationService(AppserverJBIMgmtController.java:254)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIServiceAssemblyStatus(AppserverJBIMgmtController.java:344)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getSheetProperties(JBIServiceAssemblyNode.java:139)
        at org.netbeans.modules.sun.manager.jbi.nodes.AppserverJBIMgmtNode.createSheet(AppserverJBIMgmtNode.java:107)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.updatePropertySheet(JBIServiceAssemblyNode.java:168)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.stop(JBIServiceAssemblyNode.java:312)
        at org.netbeans.modules.sun.manager.jbi.actions.StopAction$1.run(StopAction.java:54)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932)
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:4848/web1/remotejmx
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1225)
        at com.sun.enterprise.admin.jmx.remote.comm.ServletConnection.receive(ServletConnection.java:106)
        at com.sun.enterprise.admin.jmx.remote.comm.MBeanServerMessageConductor.invoke(MBeanServerMessageConductor.java:62)
        at com.sun.enterprise.admin.jmx.remote.internal.RemoteMBeanServerConnection.queryNames(RemoteMBeanServerConnection.java:481)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.initialize(AdministrationService.java:176)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.<init>(AdministrationService.java:110)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIAdministrationService(AppserverJBIMgmtController.java:254)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIServiceAssemblyStatus(AppserverJBIMgmtController.java:344)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getAssembly(JBIServiceAssemblyNode.java:78)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getAssemblyStatus(JBIServiceAssemblyNode.java:159)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getIcon(JBIServiceAssemblyNode.java:92)
        at org.openide.nodes.FilterNode.getIcon(FilterNode.java:515)
        at org.openide.explorer.view.VisualizerNode.getIcon(VisualizerNode.java:534)
        at org.openide.explorer.view.NodeRenderer.configureFrom(NodeRenderer.java:184)
        at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:122)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2807)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1342)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1333)
        at javax.swing.tree.VariableHeightLayoutCache.treeNodesChanged(VariableHeightLayoutCache.java:418)
        at javax.swing.plaf.basic.BasicTreeUI$Handler.treeNodesChanged(BasicTreeUI.java:3866)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesChanged(DefaultTreeModel.java:468)
        at javax.swing.tree.DefaultTreeModel.nodesChanged(DefaultTreeModel.java:330)
        at javax.swing.tree.DefaultTreeModel.nodeChanged(DefaultTreeModel.java:261)
        at org.openide.explorer.view.NodeTreeModel$Listener.update(NodeTreeModel.java:203)
        at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:451)
        at org.openide.util.Mutex.readAccess(Mutex.java:293)
        at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:430)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:598)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:300)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:210)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:195)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:187)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:4848/web1/remotejmx
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1225)
        at com.sun.enterprise.admin.jmx.remote.comm.ServletConnection.receive(ServletConnection.java:106)
        at com.sun.enterprise.admin.jmx.remote.comm.MBeanServerMessageConductor.invoke(MBeanServerMessageConductor.java:62)
        at com.sun.enterprise.admin.jmx.remote.internal.RemoteMBeanServerConnection.queryNames(RemoteMBeanServerConnection.java:481)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.initialize(AdministrationService.java:176)
        at org.netbeans.modules.sun.manager.jbi.management.AdministrationService.<init>(AdministrationService.java:110)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIAdministrationService(AppserverJBIMgmtController.java:254)
        at org.netbeans.modules.sun.manager.jbi.util.AppserverJBIMgmtController.getJBIServiceAssemblyStatus(AppserverJBIMgmtController.java:344)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getAssembly(JBIServiceAssemblyNode.java:78)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getAssemblyStatus(JBIServiceAssemblyNode.java:159)
        at org.netbeans.modules.sun.manager.jbi.nodes.JBIServiceAssemblyNode.getIcon(JBIServiceAssemblyNode.java:92)
        at org.openide.nodes.FilterNode.getIcon(FilterNode.java:515)
        at org.openide.explorer.view.VisualizerNode.getIcon(VisualizerNode.java:534)
        at org.openide.explorer.view.NodeRenderer.configureFrom(NodeRenderer.java:184)
        at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:122)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2807)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1342)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1333)
        at javax.swing.tree.VariableHeightLayoutCache.treeNodesChanged(VariableHeightLayoutCache.java:418)
        at javax.swing.plaf.basic.BasicTreeUI$Handler.treeNodesChanged(BasicTreeUI.java:3866)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesChanged(DefaultTreeModel.java:468)
        at javax.swing.tree.DefaultTreeModel.nodesChanged(DefaultTreeModel.java:330)
        at javax.swing.tree.DefaultTreeModel.nodeChanged(DefaultTreeModel.java:261)
        at org.openide.explorer.view.NodeTreeModel$Listener.update(NodeTreeModel.java:203)
        at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:451)
        at org.openide.util.Mutex.readAccess(Mutex.java:293)
        at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:430)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:598)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:300)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:210)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:195)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:187)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)