Null pointer exception when installing odl-cardinal feature

Cardinal feature throwing Null pointer exception Null pointer exception when installing it.

logs:

java.lang.RuntimeException: java.lang.NullPointerException
at org.opendaylight.cardinal.impl.OdlCardinalGet.snmpGet(OdlCardinalGet.java:68)
at org.opendaylight.cardinal.impl.OdlCardinalSysInfoApis.setValues(OdlCardinalSysInfoApis.java:35)
at org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.cardinal.impl.rev141210.CardinalModule.createInstance(CardinalModule.java:78)
at org.opendaylight.controller.config.spi.AbstractModule.getInstance(AbstractModule.java:87)
at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.opendaylight.controller.config.manager.impl.dependencyresolver.DependencyResolverManager$ModuleInvocationHandler.handleInvocation(DependencyResolverManager.java:149)
at com.google.common.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:87)
at com.sun.proxy.$Proxy121.getInstance(Unknown Source)
at org.opendaylight.controller.config.manager.impl.ConfigTransactionControllerImpl.secondPhaseCommit(ConfigTransactionControllerImpl.java:437)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.secondPhaseCommit(ConfigRegistryImpl.java:346)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.commitConfigSafe(ConfigRegistryImpl.java:285)
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.commitConfig(ConfigRegistryImpl.java:250)
at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor49.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:193)
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:175)
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:117)
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:54)
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.sun.jmx.mbeanserver.MXBeanProxy$InvokeHandler.invoke(MXBeanProxy.java:150)
at com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:167)
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:258)
at com.sun.proxy.$Proxy19.commitConfig(Unknown Source)
at org.opendaylight.controller.config.util.ConfigRegistryJMXClient.commitConfig(ConfigRegistryJMXClient.java:110)
at org.opendaylight.controller.config.facade.xml.transactions.TransactionProvider.commitTransaction(TransactionProvider.java:142)
at org.opendaylight.controller.config.facade.xml.ConfigSubsystemFacade.commitSilentTransaction(ConfigSubsystemFacade.java:138)
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfig(ConfigPusherImpl.java:312)
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.pushConfigWithConflictingVersionRetries(ConfigPusherImpl.java:164)
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.internalPushConfigs(ConfigPusherImpl.java:129)
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.processSingle(ConfigPusherImpl.java:83)
at org.opendaylight.controller.config.persist.impl.ConfigPusherImpl.process(ConfigPusherImpl.java:74)
at org.opendaylight.controller.config.persist.impl.osgi.ConfigPersisterActivator$2.run(ConfigPersisterActivator.java:131)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.opendaylight.cardinal.impl.OdlCardinalGet.snmpGet(OdlCardinalGet.java:55)
... 44 more