at io.hydrosphere.mist.worker.logging.RemoteAppender.close(RemoteAppender.scala:30)
at org.apache.log4j.AppenderSkeleton.finalize(AppenderSkeleton.java:144)
at java.lang.System$2.invokeFinalize(System.java:1270)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:213)
Remote appender could be closed unexpectedly: