我收到错误：
java.io.UncheckedIOException: java.nio.file.FileSystemException: /OutlookAttachments: Stale file handle
at java.nio.file.FileTreeIterator.fetchNextIfNeeded(FileTreeIterator.java:88) ~[na:1.8.0_101]
at java.nio.file.FileTreeIterator.hasNext(FileTreeIterator.java:104) ~[na:1.8.0_101]
at java.util.Iterator.forEachRemaining(Iterator.java:115) ~[na:1.8.0_101]
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[na:1.8.0_101]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_101]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_101]
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[na:1.8.0_101]
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[na:1.8.0_101]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_101]
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[na:1.8.0_101]
当我想从Amazon EFS删除文件时，是否意味着该文件不存在，或者原因是什么？