java.lang.AssertionError: Need to normalize C:\Users\user\Downloads\Certification for (class java.io.File) was C:\Users\user\Downloads\Certification for(class java.io.File)
   at org.openide.filesystems.FileUtil.assertNormalized(FileUtil.java:155)
   at org.openide.filesystems.FileUtil.toFile(FileUtil.java:851)
   at org.netbeans.modules.versioning.core.api.VCSFileProxy.createFileProxy(VCSFileProxy.java:184)
   at org.netbeans.modules.versioning.masterfs.FilesystemInterceptor.createdExternally(FilesystemInterceptor.java:238)
   at org.netbeans.modules.masterfs.ProvidedExtensionsProxy$12.run(ProvidedExtensionsProxy.java:338)
   at org.netbeans.modules.masterfs.ProvidedExtensionsProxy.runCheckCode(ProvidedExtensionsProxy.java:493)
   at org.netbeans.modules.masterfs.ProvidedExtensionsProxy.createdExternally(ProvidedExtensionsProxy.java:336)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:507)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.refresh(BaseFileObj.java:893)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refresh(FolderObj.java:562)
   at org.openide.filesystems.FileObject.refresh(FileObject.java:1219)
   at org.netbeans.modules.masterfs.watcher.Watcher$1.run(Watcher.java:438)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError: Need to normalize C:\Users\user\Downloads\Certification for (class java.io.File) was C:\Users\user\Downloads\Certification for(class java.io.File)
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1484)
   at org.netbeans.modules.masterfs.watcher.Watcher.enqueue(Watcher.java:451)
   at org.netbeans.modules.masterfs.watcher.Watcher.access$300(Watcher.java:78)
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.run(Watcher.java:370)
   at java.lang.Thread.run(Thread.java:844)