org.openide.filesystems.FileStateInvalidException
        at org.openide.filesystems.AbstractFileObject$Invalid.getFileSystem(Abstr
actFileObject.java:690)
        at org.netbeans.modules.web.core.jsploader.JspCompileUtil.getContextOutpu
tRoot(JspCompileUtil.java:157)
        at org.netbeans.modules.web.core.jsploader.jakarta.ManglerImpl.<init>(Man
glerImpl.java:68)
        at org.netbeans.modules.web.core.jsploader.jakarta.JakartaServerPlugin$Ja
kartaJspPlugin.<init>(JakartaServerPlugin.java:125)
        at org.netbeans.modules.web.core.jsploader.jakarta.JakartaServerPlugin$Ja
kartaJspPluginCookie.getPlugin(JakartaServerPlugin.java:100)
        at org.netbeans.modules.web.core.jsploader.jakarta.JakartaServerPlugin.ge
tJspPlugin(JakartaServerPlugin.java:68)
        at org.netbeans.modules.web.core.jsploader.JspDataObject.getPlugin(JspDat
aObject.java:345)
        at org.netbeans.modules.web.core.jsploader.JspDataObject.getServletDataOb
ject(JspDataObject.java:371)
        at org.netbeans.modules.web.core.jsploader.JspDataObject.getServletEditor
(JspDataObject.java:580)
        at org.netbeans.modules.web.debug.JspLine.getJavaLines(JspLine.java:446)
        at org.netbeans.modules.web.debug.JspLine.getNumberOfServletBreakpoints(J
spLine.java:280)
        at org.netbeans.modules.web.debug.JspLine.unmarkError(JspLine.java:184)
        at org.netbeans.core.compiler.CompilerDisplayer$ErrorCtl.outputLineCleare
d(CompilerDisplayer.java:289)
        at org.netbeans.core.output.OutPane.clearLineTable(OutPane.java:204)
        at org.netbeans.core.output.OutPane$PaneWriter.reset(OutPane.java:412)
        at org.netbeans.core.compiler.CompilerDisplayer.compilationStarted(Compil
erDisplayer.java:169)
        at org.netbeans.core.compiler.CompilationEngineImpl$CompilerThread.run(Co
mpilationEngineImpl.java:183) 
Exception occurred during event dispatching:
java.lang.NullPointerException
        at org.netbeans.core.compiler.CompilerDisplayer$ErrorCtl.outputLineCleare
d(CompilerDisplayer.java:289)
        at org.netbeans.core.output.OutPane.clearLineTable(OutPane.java:204)
        at org.netbeans.core.output.OutPane$PaneWriter.reset(OutPane.java:412)
        at org.netbeans.core.output.OutPane$PaneWriter.close(OutPane.java:408)
        at org.netbeans.core.output.OutputTab.closeInputOutput(OutputTab.java:321
)
        at org.netbeans.core.output.OutputTab.topComponentClosed(OutputTab.java:2
50)
        at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.doClos
e(WindowManagerImpl.java:995)
        at org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.close(
WindowManagerImpl.java:931)
        at org.openide.windows.TopComponent.close(TopComponent.java:245)
        at org.openide.windows.TopComponent.close(TopComponent.java:216)
        at org.netbeans.core.windows.ModeImpl.containerClosing(ModeImpl.java:574)
        at org.netbeans.core.windows.MultiTabListenerImpl.windowClosing(MultiTabL
istenerImpl.java:56)
        at java.awt.AWTEventMulticaster.windowClosing(AWTEventMulticaster.java:29
1)
        at java.awt.Window.processWindowEvent(Window.java:798)
        at javax.swing.JFrame.processWindowEvent(JFrame.java:241)
        at java.awt.Window.processEvent(Window.java:774)
        at java.awt.Component.dispatchEventImpl(Component.java:2595)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Window.dispatchEventImpl(Window.java:912)
        at java.awt.Component.dispatchEvent(Component.java:2499)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:333)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:103
)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:84)