java.lang.ClassNotFoundException: net.java.html.boot.fx.FXBrowsers
   at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.ClassNotFoundException: net.java.html.boot.fx.FXBrowsers starting from ModuleCL@2c3baee8[org.netbeans.api.htmlui] with possible defining loaders null and declared parents [ModuleCL@72557ccc[org.openide.windows], Netigso[reference:file:platform/modules/net-java-html-json.jar], org.netbeans.MainImpl$BootClassLoader@377dca04, ModuleCL@5324a174[org.netbeans.libs.javafx], ModuleCL@36a62d3f[org.openide.dialogs], Netigso[reference:file:platform/modules/net-java-html.jar], Netigso[reference:file:platform/modules/net-java-html-boot-fx.jar], ModuleCL@bee752d[org.openide.awt], Netigso[reference:file:platform/modules/net-java-html-boot.jar], Netigso[reference:file:platform/modules/org-netbeans-html-ko4j.jar]]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.NoClassDefFoundError: net/java/html/boot/fx/FXBrowsers
   at org.netbeans.modules.htmlui.NbBrowsers.load(NbBrowsers.java:162)
   at org.netbeans.modules.htmlui.HtmlComponent.loadFX(HtmlComponent.java:105)
   at org.netbeans.modules.htmlui.Pages$R.run(Pages.java:106)
   at com.sun.javafx.application.PlatformImpl.lambda$null$174(PlatformImpl.java:295)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(PlatformImpl.java:294)
   at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
   at com.sun.glass.ui.gtk.GtkApplication._runLoop(GtkApplication.java:0)
   at com.sun.glass.ui.gtk.GtkApplication.lambda$null$50(GtkApplication.java:139)
   at java.lang.Thread.run(Thread.java:745)