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java.lang.InstantiationException: null at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at iot.agile.devicefactory.DeviceFactoryImp.getDevice(DeviceFactoryImp.java:332) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.freedesktop.dbus.AbstractConnection$1.run(Unknown Source) at org.freedesktop.dbus.AbstractConnection$_workerthread.run(Unknown Source)