MqttException in Mqttv3Client

Hi
I got the issue while running the osgi framework. Mqtt class integrated into one of my biding. If I compile and run the single mqtt class. It's been working fine. The communication also happening. If I run by using osgi framework. It throws errors

```
!ENTRY org.eclipse.smarthome.core.thing 4 0 2018-06-27 09:52:00.291
!MESSAGE FrameworkEvent ERROR
!STACK 0
java.lang.NoClassDefFoundError: org/eclipse/paho/client/mqttv3/MqttException
at org.openhab.binding.snavxbee2.internal.SNAVXbee2HandlerFactory.registerXbeeDiscoveryService(SNAVXbee2HandlerFactory.java:77)
at org.openhab.binding.snavxbee2.internal.SNAVXbee2HandlerFactory.createHandler(SNAVXbee2HandlerFactory.java:68)
at org.eclipse.smarthome.core.thing.binding.BaseThingHandlerFactory.registerHandler(BaseThingHandlerFactory.java:119)
at org.eclipse.smarthome.core.thing.internal.ThingManager.doRegisterHandler(ThingManager.java:547)
at org.eclipse.smarthome.core.thing.internal.ThingManager.registerHandler(ThingManager.java:524)
at org.eclipse.smarthome.core.thing.internal.ThingManager.registerAndInitializeHandler(ThingManager.java:998)
at org.eclipse.smarthome.core.thing.internal.ThingManager.thingAdded(ThingManager.java:405)
at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyTrackers(ThingRegistryImpl.java:211)
at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyListenersAboutAddedElement(ThingRegistryImpl.java:130)
at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.notifyListenersAboutAddedElement(ThingRegistryImpl.java:1)
at org.eclipse.smarthome.core.common.registry.AbstractRegistry.addProvider(AbstractRegistry.java:307)
at org.eclipse.smarthome.core.common.registry.AbstractRegistry$ProviderTracker.addingService(AbstractRegistry.java:114)
at org.eclipse.smarthome.core.common.registry.AbstractRegistry$ProviderTracker.addingService(AbstractRegistry.java:1)
at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)
at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:1)
at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:920)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:469)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:887)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:874)
at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:132)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:941)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:741)
at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1012)
at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:968)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1215)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1136)
at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:945)
at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:881)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1167)
at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:127)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:920)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:469)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:887)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:874)
at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:132)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:941)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:741)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:675)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:430)
at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:657)
at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:341)
at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:390)
at org.apache.felix.scr.impl.Activator.access$200(Activator.java:54)
at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:265)
at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:254)
at org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:227)
at org.apache.felix.utils.extender.AbstractExtender.addingBundle(AbstractExtender.java:187)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:1)
at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:908)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:213)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:120)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:112)
at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:168)
at org.eclipse.osgi.container.Module.publishEvent(Module.java:476)
at org.eclipse.osgi.container.Module.doStart(Module.java:578)
at org.eclipse.osgi.container.Module.start(Module.java:449)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1628)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1608)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1579)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1522)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Caused by: java.lang.ClassNotFoundException: org.eclipse.paho.client.mqttv3.MqttException cannot be found by org.openhab.binding.xbee.original_2.0.2.qualifier
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 86 more
```
Can anyone knows this issue. Please help me regarding issue.

Thanks and Regards,
Amar Pulli.