java.util.concurrent.CountDownLatch$Sync: This exception has no message.

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java.util.concurrent.CountDownLatch$Sync:
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:994)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:236)
at org.atmosphere.cpr.BroadcasterFuture.get(BroadcasterFuture.java:114)
at org.scalatra.atmosphere.package$$anonfun$pollJavaFutureUntilDoneOrCancelled$3.apply(package.scala:61)
at scala.util.control.Exception$Catch$$anonfun$withTry$1.apply(Exception.scala:130)
at scala.util.control.Exception$Catch$$anonfun$withTry$1.apply(Exception.scala:130)
at scala.util.control.Exception$Catch.apply(Exception.scala:103)
at org.scalatra.atmosphere.package$.pollJavaFutureUntilDoneOrCancelled(package.scala:61)
at org.scalatra.atmosphere.package$.jucFuture2akkaFuture(package.scala:51)
at org.scalatra.atmosphere.ScalatraBroadcaster$class.broadcast(ScalatraBroadcaster.scala:24)
at org.scalatra.atmosphere.DefaultScalatraBroadcaster.broadcast(DefaultScalatraBroadcaster.scala:8)
at org.scalatra.atmosphere.AtmosphereClient$$anonfun$broadcast$1.apply(AtmosphereClient.scala:31)
at org.scalatra.atmosphere.AtmosphereClient$$anonfun$broadcast$1.apply(AtmosphereClient.scala:31)
at scala.Option.foreach(Option.scala:257)
at org.scalatra.atmosphere.AtmosphereClient$.broadcast(AtmosphereClient.scala:31)

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