Whenever I click on Sample, I get [1].
Whenever I select documentation in the search box or from the sample page, I get [2].

[1] Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: javafx/scene/web/WebView
        at ensemble.samplepage.Sources.<init>(Sources.java:79)
        at ensemble.samplepage.BackPage.<init>(BackPage.java:49)
        at ensemble.samplepage.SamplePage.<init>(SamplePage.java:72)
        at ensemble.PageBrowser.goToPage(PageBrowser.java:140)
        at ensemble.PageBrowser.goToSample(PageBrowser.java:89)
        at ensemble.HomePage$HomeListCell$1.handle(HomePage.java:283)
        at ensemble.HomePage$HomeListCell$1.handle(HomePage.java:280)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
        at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
        at javafx.event.Event.fireEvent(Event.java:203)
        at javafx.scene.Node.fireEvent(Node.java:8109)
        at javafx.scene.control.Button.fire(Button.java:185)
        at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
        at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
        at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
        at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
        at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
        at javafx.event.Event.fireEvent(Event.java:203)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:3659)
        at javafx.scene.Scene$MouseHandler.access$1800(Scene.java:3384)
        at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1652)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2443)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:314)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:243)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:345)
        at com.sun.glass.ui.View.handleMouseEvent(View.java:523)
        at com.sun.glass.ui.View.notifyMouse(View.java:889)
        at com.sun.glass.ui.lens.LensView._notifyMouse(LensView.java:164)
        at com.sun.glass.ui.lens.LensApplication$LensMouseEvent.dispatch(LensApplication.java:390)
        at com.sun.glass.ui.lens.LensApplication._runLoop(LensApplication.java:869)
        at com.sun.glass.ui.lens.LensApplication.access$1700(LensApplication.java:57)
        at com.sun.glass.ui.lens.LensApplication$4.run(LensApplication.java:922)
        at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException: javafx.scene.web.WebView
        at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 67 more


[2] Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: javafx/scene/web/WebView
        at ensemble.DocsPage.<init>(DocsPage.java:55)
        at ensemble.PageBrowser.goToPage(PageBrowser.java:135)
        at ensemble.PageBrowser.goToPage(PageBrowser.java:93)
        at ensemble.SearchResultPopoverList.itemClicked(SearchResultPopoverList.java:91)
        at ensemble.SearchResultPopoverList$SearchResultListCell.handle(SearchResultPopoverList.java:379)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
        at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
        at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
        at javafx.event.Event.fireEvent(Event.java:203)
        at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3369)
        at javafx.scene.Scene$ClickGenerator.access$8300(Scene.java:3300)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:3668)
        at javafx.scene.Scene$MouseHandler.access$1800(Scene.java:3384)
        at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1652)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2443)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:314)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:243)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:345)
        at com.sun.glass.ui.View.handleMouseEvent(View.java:523)
        at com.sun.glass.ui.View.notifyMouse(View.java:889)
        at com.sun.glass.ui.lens.LensView._notifyMouse(LensView.java:164)
        at com.sun.glass.ui.lens.LensApplication$LensMouseEvent.dispatch(LensApplication.java:390)
        at com.sun.glass.ui.lens.LensApplication._runLoop(LensApplication.java:869)
        at com.sun.glass.ui.lens.LensApplication.access$1700(LensApplication.java:57)
        at com.sun.glass.ui.lens.LensApplication$4.run(LensApplication.java:922)
        at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException: javafx.scene.web.WebView
        at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 40 more