org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server '127.0.0.1:33037' with timeout of 60000 ms

sbt.ForkMain$ForkError: org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server '127.0.0.1:33037' with timeout of 60000 ms
	at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1233)
	at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:157)
	at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:131)
	at kafka.utils.ZkUtils$.createZkClientAndConnection(ZkUtils.scala:93)
	at kafka.utils.ZkUtils$.apply(ZkUtils.scala:75)
	at org.apache.spark.streaming.kafka010.KafkaTestUtils.setupEmbeddedZookeeper(KafkaTestUtils.scala:100)
	at org.apache.spark.streaming.kafka010.KafkaTestUtils.setup(KafkaTestUtils.scala:130)
	at org.apache.spark.streaming.kafka010.DirectKafkaStreamSuite.beforeAll(DirectKafkaStreamSuite.scala:63)
	at org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:212)
	at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:210)
	at org.apache.spark.streaming.kafka010.DirectKafkaStreamSuite.org$scalatest$BeforeAndAfter$$super$run(DirectKafkaStreamSuite.scala:46)
	at org.scalatest.BeforeAndAfter$class.run(BeforeAndAfter.scala:258)
	at org.apache.spark.streaming.kafka010.DirectKafkaStreamSuite.run(DirectKafkaStreamSuite.scala:46)
	at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:314)
	at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:480)
	at sbt.ForkMain$Run$2.call(ForkMain.java:296)
	at sbt.ForkMain$Run$2.call(ForkMain.java:286)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)