When I create a child container from FMC, even though container gets created successfully but I see below error in log file.

c.fabric-rest - 7.1.0.fuse-047 | The following warnings have been detected with resource and/or provider classes:

WARNING: Return type org.fusesource.fabric.api.CreateContainerMetadata<? extends org.fusesource.fabric.api.CreateContainerOptions>[http://] of method public org.fusesource.fabric.api.CreateContainerMetadata<? extends org.fusesource.fabric.api.CreateContainerOptions>[] org.fusesource.fabric.webui.agents.AgentsResource.create(java.util.Map<java.lang.String, java.lang.Object>) is not resolvable to a concrete type

2013-02-19 13:19:01,000 | WARN  | ad-2-EventThread | ZooKeeperTreeTracker             | ZooKeeperTreeTracker$TreeWatcher  118 | 49 - org.fusesource.fabric.fabric-linkedin-zookeeper - 7.1.0.fuse-047 |http://*/fabric/configs/versions/1.0* ZooKeeperTreeTracker@4769eb76 [Thread[http://pool-org.fusesource.fabric.fabric-zookeeper-7.1.0.fuse-047-thread-2-EventThread,5,org.fusesource.fabric.fabric-zookeeper-7.1.0.fuse-047]] Error in treeWatcher (ignored)

org.osgi.service.blueprint.container.ServiceUnavailableException: The Blueprint container is being or has been destroyed: (objectClass=org.fusesource.fabric.zookeeper.IZKClient)

at org.apache.aries.blueprint.container.ReferenceRecipe.getService(ReferenceRecipe.java:234)7:org.apache.aries.blueprint.core:1.0.1.fuse-71-047