GCE NullPointer

After calling destroy on instance, NPE appeared.
Instance was started with network, I already created before, for all future instances.

java.lang.NullPointerException
at org.jclouds.googlecomputeengine.compute.GoogleComputeEngineService.cleanUpNetworksAndFirewallsForGroup(GoogleComputeEngineService.java:138)
at org.jclouds.googlecomputeengine.compute.GoogleComputeEngineService.cleanUpIncidentalResourcesOfDeadNodes(GoogleComputeEngineService.java:128)
at org.jclouds.compute.internal.BaseComputeService.destroyNodesMatching(BaseComputeService.java:274)
at org.librade.comla.components.ComlaServerManagementComponent$8.run(ComlaServerManagementComponent.java:586)
at org.fabric3.execution.runtime.PropagatingRunnable.run(PropagatingRunnable.java:33)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)