Cannot get property 'eventListeners' on null object

[djavaphp]

HI,
Have integrated plugin in grails 2.2.3 app,
But giving me an error as following:
ERROR context.GrailsContextLoader - Error initializing the application: Cannot get property 'eventListeners' on null object
Message: Cannot get property 'eventListeners' on null object

I think error is with : doWithApplicationContext in plugin.

But I am not able to solve it. Can you plz help me to solve it...