NPE when using gateway

ava.lang.NullPointerException
  at io.fabric8.gateway.fabric.support.http.HttpMappingZooKeeperTreeCache.expandPropertyResolvers(HttpMappingZooKeeperTreeCache.java:165)[io.fabric8:gateway-fabric-support:1.2.0.redhat-056]
  at io.fabric8.gateway.fabric.support.http.HttpMappingZooKeeperTreeCache.treeCacheEvent(HttpMappingZooKeeperTreeCache.java:142)[io.fabric8:gateway-fabric-support:1.2.0.redhat-056]
  at io.fabric8.gateway.fabric.support.http.HttpMappingZooKeeperTreeCache$1.childEvent(HttpMappingZooKeeperTreeCache.java:65)[io.fabric8:gateway-fabric-support:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache$5.apply(TreeCache.java:536)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache$5.apply(TreeCache.java:532)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.listen.ListenerContainer$1.run(ListenerContainer.java:92)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297)[com.google.guava:guava:17.0]
  at org.apache.curator.framework.listen.ListenerContainer.forEach(ListenerContainer.java:83)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache.callListeners(TreeCache.java:530)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeEventOperation.invoke(TreeEventOperation.java:32)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache.mainLoop(TreeCache.java:837)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache.access$600(TreeCache.java:70)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at org.apache.curator.framework.recipes.cache.TreeCache$4.run(TreeCache.java:300)[io.fabric8:fabric-zookeeper:1.2.0.redhat-056]
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_45]
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_45]
  at java.lang.Thread.run(Thread.java:744)[:1.7.0_45]