java.lang.ClassNotFoundException: org.netbeans.api.java.source.Task
   at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.ClassNotFoundException: org.netbeans.api.java.source.Task starting from ModuleCL@448eb468[org.netbeans.modules.java.hints] with possible defining loaders [ModuleCL@2bcaef82[org.netbeans.modules.java.source.base], ModuleCL@2f882927[org.netbeans.modules.java.source]] and declared parents [ModuleCL@2cb27935[org.openide.nodes], ModuleCL@7f43e336[org.netbeans.modules.lexer], ModuleCL@384178b6[org.netbeans.modules.java.project.ui], ModuleCL@3e335fbb[org.netbeans.spi.java.hints], ModuleCL@3a5091fd[org.netbeans.modules.projectuiapi.base], ModuleCL@42a8cdd9[org.netbeans.modules.refactoring.api], ModuleCL@7e57f892[org.netbeans.modules.editor.settings], ModuleCL@219141e1[org.netbeans.modules.options.api], ModuleCL@169870bb[org.netbeans.modules.projectapi], ModuleCL@75976908[org.netbeans.modules.java.hints.legacy.spi], ...39 more]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.NoClassDefFoundError: org/netbeans/api/java/source/Task
   at org.netbeans.modules.java.hints.analyzer.AnalyzeFolder.isEnabled(AnalyzeFolder.java:83)
   at org.openide.actions.ToolsAction.generate(ToolsAction.java:240)
   at org.openide.actions.ToolsAction.access$100(ToolsAction.java:94)
   at org.openide.actions.ToolsAction$Inline.synchMenuPresenters(ToolsAction.java:321)
   at org.openide.actions.ToolsAction$Inline.getMenuPresenters(ToolsAction.java:329)
   at org.openide.awt.DynaMenuModel.loadSubmenu(DynaMenuModel.java:109)
   at org.openide.awt.MenuBar$LazyMenu$MenuFolder.createInstance(MenuBar.java:808)
   at org.openide.loaders.FolderInstance.defaultProcessObjectsFinal(FolderInstance.java:888)
   at org.openide.loaders.FolderInstance$1R.run(FolderInstance.java:730)
   at org.openide.util.Task.run(Task.java:257)
   at org.netbeans.modules.openide.loaders.AWTTask.run(AWTTask.java:79)
   at org.netbeans.modules.openide.loaders.AWTTask$Processor.run(AWTTask.java:172)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
   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)