java.lang.AssertionError: Should be a folder: D:\Test\WebRequestOld\build\web\WEB-INF@1297c48f:1aa59d2
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.register(Watcher.java:224)
   at org.netbeans.modules.masterfs.watcher.Watcher.register(Watcher.java:119)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.addFileChangeListener(BaseFileObj.java:501)
   at org.openide.filesystems.FileUtil$Holder.locateCurrent(FileUtil.java:436)
   at org.openide.filesystems.FileUtil$Holder.someChange(FileUtil.java:454)
   at org.openide.filesystems.FileUtil$Holder.fileDataCreated(FileUtil.java:507)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:139)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:128)
   at org.openide.filesystems.FCLSupport$1.run(FCLSupport.java:177)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1973)
Caused: org.openide.util.RequestProcessor$FastItem: task failed due to: java.lang.AssertionError: Should be a folder: D:\Test\WebRequestOld\build\web\WEB-INF@1297c48f:1aa59d2