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java.lang.IllegalArgumentException: Null charset name	at java.nio.charset.Charset.lookup(Charset.java:457)	at java.nio.charset.Charset.isSupported(Charset.java:505)	at org.eclipse.wst.sse.core.internal.encoding.CodedIO.createEncodingMemento(CodedIO.java:108)	at org.eclipse.wst.sse.core.internal.encoding.CodedIO.createMemento(CodedIO.java:247)	at org.eclipse.wst.sse.core.internal.encoding.CodedReaderCreator.checkForEncodingInContents(CodedReaderCreator.java:120)	at org.eclipse.wst.sse.core.internal.encoding.CodedReaderCreator.findMementoFromStreamCase(CodedReaderCreator.java:233)	at org.eclipse.wst.sse.core.internal.encoding.CodedReaderCreator.getEncodingMemento(CodedReaderCreator.java:326)	at org.eclipse.wst.sse.core.internal.document.AbstractDocumentLoader.createNewStructuredDocument(AbstractDocumentLoader.java:165)	at org.eclipse.wst.sse.core.internal.document.AbstractDocumentLoader.createNewStructuredDocument(AbstractDocumentLoader.java:153)	at org.eclipse.wst.sse.core.internal.model.AbstractModelLoader.load(AbstractModelLoader.java:307)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._doCommonCreateModel(ModelManagerImpl.java:404)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonCreateModel(ModelManagerImpl.java:367)	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl.getModelForEdit(ModelManagerImpl.java:1414)	at org.eclipse.jst.pagedesigner.css2.CSSUtil.getUserAgentDefaultStyleSheet(CSSUtil.java:239)	at org.eclipse.jst.pagedesigner.css2.CSSUtil.getDefaultCSSDeclaration(CSSUtil.java:199)	at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.calculateDefaultDeclaration(AbstractStyle.java:150)	at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getDefaultDeclaration(AbstractStyle.java:171)	at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.calculateProperty(AbstractStyle.java:212)	at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getStyleProperty(AbstractStyle.java:124)	at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getDisplay(AbstractStyle.java:536)	at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.regetLayout(CSSFigure.java:148)	at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.invalidateCSS(CSSFigure.java:95)	at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.setCSSStyle(CSSFigure.java:79)	at org.eclipse.jst.pagedesigner.figurehandler.DefaultFigureHandler.updateFigure(DefaultFigureHandler.java:32)	at org.eclipse.jst.pagedesigner.figurehandler.FigureFactory.updateDeepFigure(FigureFactory.java:129)	at org.eclipse.jst.pagedesigner.parts.ElementEditPart.refresh(ElementEditPart.java:315)	at org.eclipse.jst.pagedesigner.parts.ElementEditPart.refresh(ElementEditPart.java:264)	at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:253)	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:223)	at org.eclipse.jst.pagedesigner.parts.NodeEditPart.addNotify(NodeEditPart.java:104)	at org.eclipse.jst.pagedesigner.parts.ElementEditPart.addNotify(ElementEditPart.java:155)	at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:212)	at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:781)	at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refreshChildren(DocumentEditPart.java:134)	at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refreshChildren(DocumentEditPart.java:126)	at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:726)	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:644)	at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refresh(DocumentEditPart.java:114)	at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:253)	at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:223)	at org.eclipse.jst.pagedesigner.parts.NodeEditPart.addNotify(NodeEditPart.java:104)	at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:212)	at org.eclipse.gef.editparts.SimpleRootEditPart.setContents(SimpleRootEditPart.java:105)	at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:617)	at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:626)	at org.eclipse.jst.pagedesigner.editors.SimpleGraphicalEditor.setModel(SimpleGraphicalEditor.java:455)	at org.eclipse.jst.pagedesigner.editors.HTMLEditor.connectDesignPage(HTMLEditor.java:382)	at org.eclipse.jst.pagedesigner.editors.HTMLEditor.createPages(HTMLEditor.java:462)	at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:363)	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:151)	at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:341)	at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:898)	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:879)	at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:121)	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:345)	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:264)	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104)	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73)	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55)	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:971)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:640)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:746)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:717)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:711)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:695)	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$1.handleEvent(PartServiceImpl.java:99)	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40)	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:186)	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4781)	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:211)	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36)	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:85)	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:59)	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:494)	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:458)	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:724)	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:396)	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1166)	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3234)	at org.eclipse.ui.internal.WorkbenchPage.access$25(WorkbenchPage.java:3149)	at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:3131)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3126)	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3090)	at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:336)	at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:182)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4230)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1491)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1514)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1499)	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1299)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3698)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)