Logstash giving nfs stale error

I have few server logs folder mounted on Solaris server with NFS protocol, and we run logstash command on screen, but after a while it gives error nfs

     Error: unknown IOException: jnr.enxio.channels.NativeException: Error closing fd 371: Stale NFS file handle
     Exception: Java::JavaLang::RuntimeException
     Stack: org.jruby.util.io.PosixShim.close(PosixShim.java:260)

also

FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<NoMethodError: undefined method `map_cleanup' for nil:NilClass>