java.lang.ClassNotFoundException: jdk.jshell.spi.ExecutionControl$Generator starting from ModuleCL@37fe2d6d[org.netbeans.modules.jshell.support] with possible defining loaders null and declared parents [ModuleCL@6e1f8c0e[org.apache.tools.ant.module], ModuleCL@18352635[org.netbeans.modules.java.platform], ModuleCL@444673d7[org.netbeans.api.annotations.common], ModuleCL@6f778aee[org.netbeans.api.templates], ModuleCL@1d0eee87[org.openide.execution], ModuleCL@6b994ff8[org.openide.dialogs], org.netbeans.MainImpl$BootClassLoader@31221be2, ModuleCL@3e496eb6[org.netbeans.modules.editor.settings], ModuleCL@3e9a1315[org.netbeans.modules.lexer], ModuleCL@3b93b6c9[org.openide.awt], ...48 more]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:228)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.NoClassDefFoundError: jdk/jshell/spi/ExecutionControl$Generator
   at java.lang.ClassLoader.defineClass1(ClassLoader.java:0)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
   at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:311)
Caused: java.lang.NoClassDefFoundError: jdk/jshell/spi/ExecutionControl$Generator while loading org.netbeans.modules.jshell.support.JShellGenerator; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
   at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:263)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:187)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
   at org.netbeans.modules.jshell.env.ShellRegistry.openDefaultSession(ShellRegistry.java:297)
   at org.netbeans.modules.jshell.launch.PlatformShellAction.actionPerformed(PlatformShellAction.java:103)
   at org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:199)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:202)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
   at java.awt.Component.processMouseEvent(Component.java:6533)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
   at java.awt.Component.processEvent(Component.java:6298)
   at java.awt.Container.processEvent(Container.java:2236)
   at java.awt.Component.dispatchEventImpl(Component.java:4889)
   at java.awt.Container.dispatchEventImpl(Container.java:2294)
   at java.awt.Component.dispatchEvent(Component.java:4711)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4888)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4525)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4466)
   at java.awt.Container.dispatchEventImpl(Container.java:2280)
   at java.awt.Window.dispatchEventImpl(Window.java:2746)
   at java.awt.Component.dispatchEvent(Component.java:4711)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:731)
   at java.awt.EventQueue$4.run(EventQueue.java:729)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)