Hello, i found some exception error in my log file frankly speaking i don't know how to solve this can you please help me to solve exception error . i am new to stanbol
this my error 10.04.2016 18:37:31.322 *ERROR* [FelixStartLevel] org.apache.stanbol.enhancer.engines.zemanta [org.apache.stanbol.enhancer.engines.zemanta.impl.ZemantaEnhancementEngine(261)] Failed creating the component instance; see log for reason 10.04.2016 18:37:31.323 *ERROR* [FelixDispatchQueue] org.apache.stanbol.enhancer.engines.zemanta FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory returned null.) org.osgi.framework.ServiceException: Service factory returned null. at org.apache.felix.framework.ServiceRegistrationImpl.getFactoryUnchecked(ServiceRegistrationImpl.java:376) at org.apache.felix.framework.ServiceRegistrationImpl.access$100(ServiceRegistrationImpl.java:48) at org.apache.felix.framework.ServiceRegistrationImpl$ServiceFactoryPrivileged.run(ServiceRegistrationImpl.java:407) at java.security.AccessController.doPrivileged(Native Method) at org.apache.felix.framework.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:238) at org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:356) at org.apache.felix.framework.Felix.getService(Felix.java:3668) at org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:470)