java.lang.RuntimeException: null при запросе с помощью Reactive Mongo 0.11

Я пытаюсь запросить коллекцию с помощью findAll с selector = {} в JsonCollection с Play 2.4.2 и Reactive Mongo 0.11.5.

Ошибка запроса в методе foldM глубоко внутри play.api.libs.iteratee при вызове метода collect[List].

Последний код, который я смог отследить, был case Input.El(e) => { val newS = executeFuture(f(s, e))(pec); flatten(newS.map(s1 => Cont[E, A](step(s1)))(dec)) }.

Этот код был перенесен из реактивного монго 0.10.5 и плей 2.3.9.

Трассировка стека:

java.lang.RuntimeException: null
        at scala.sys.package$.error(package.scala:27) ~[scala-library-2.11.6.jar:na]
        at play.api.libs.iteratee.Iteratee$$anonfun$run$1.apply(Iteratee.scala:396) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.Iteratee$$anonfun$run$1.apply(Iteratee.scala:389) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold$2.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold$2.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) ~[scala-library-2.11.6.jar:na]
        at play.api.libs.iteratee.Execution$trampoline$.executeScheduled(Execution.scala:109) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.Execution$trampoline$.execute(Execution.scala:71) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:40) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:248) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.Promise$class.complete(Promise.scala:55) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Promise$DefaultPromise.complete(Promise.scala:153) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:23) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:121) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [scala-library-2.11.6.jar:na]