Premature connection close (the server doesn't appear to support request pipelining)

I enter a workspace and I try to download the sample TSV and instead I get a
stack trace (seen below) with the message. Isn't this a known issue? I think I've seen this before...

I suspect that the fact that there are 23013 samples in the workspace might have something to
do with encountering this.

{
  "statusCode": 500,
  "source": "FireCloud",
  "timestamp": 1496937836699,
  "causes": [],
  "exceptionClass": "spray.can.Http$ConnectionException",
  "stackTrace": [{
    "className": "spray.can.client.HttpHostConnectionSlot",
    "methodName": "reportDisconnection",
    "fileName": "HttpHostConnectionSlot.scala",
    "lineNumber": 228
  }, {
    "className": "spray.can.client.HttpHostConnectionSlot$$anonfun$connected$1",
    "methodName": "applyOrElse",
    "fileName": "HttpHostConnectionSlot.scala",
    "lineNumber": 161
  }, {
    "className": "akka.actor.Actor$class",
    "methodName": "aroundReceive",
    "fileName": "Actor.scala",
    "lineNumber": 480
  }, {
    "className": "spray.can.client.HttpHostConnectionSlot",
    "methodName": "aroundReceive",
    "fileName": "HttpHostConnectionSlot.scala",
    "lineNumber": 33
  }, {
    "className": "akka.actor.ActorCell",
    "methodName": "receiveMessage",
    "fileName": "ActorCell.scala",
    "lineNumber": 526
  }, {
    "className": "akka.actor.ActorCell",
    "methodName": "invoke",
    "fileName": "ActorCell.scala",
    "lineNumber": 495
  }, {
    "className": "akka.dispatch.Mailbox",
    "methodName": "processMailbox",
    "fileName": "Mailbox.scala",
    "lineNumber": 257
  }, {
    "className": "akka.dispatch.Mailbox",
    "methodName": "run",
    "fileName": "Mailbox.scala",
    "lineNumber": 224
  }, {
    "className": "akka.dispatch.Mailbox",
    "methodName": "exec",
    "fileName": "Mailbox.scala",
    "lineNumber": 234
  }, {
    "className": "scala.concurrent.forkjoin.ForkJoinTask",
    "methodName": "doExec",
    "fileName": "ForkJoinTask.java",
    "lineNumber": 260
  }, {
    "className": "scala.concurrent.forkjoin.ForkJoinPool$WorkQueue",
    "methodName": "runTask",
    "fileName": "ForkJoinPool.java",
    "lineNumber": 1339
  }, {
    "className": "scala.concurrent.forkjoin.ForkJoinPool",
    "methodName": "runWorker",
    "fileName": "ForkJoinPool.java",
    "lineNumber": 1979
  }, {
    "className": "scala.concurrent.forkjoin.ForkJoinWorkerThread",
    "methodName": "run",
    "fileName": "ForkJoinWorkerThread.java",
    "lineNumber": 107
  }],
  "message": "Premature connection close (the server doesn't appear to support request pipelining)"
}