#vulnerable code 
                             @Override
	public void contextInitialized(ServletContextEvent event) {
		checkCDIAvailable();
		BeanManager.INSTANCE.getReference(EagerBeansRepository.class).instantiateApplicationScoped();
		FacesViews.addMappings(event.getServletContext());
		CacheInitializer.loadProviderAndRegisterFilter(event.getServletContext());
	} 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             @Override
	public void contextInitialized(ServletContextEvent event) {
		checkCDIAvailable();
		EagerBeansRepository.getInstance().instantiateApplicationScoped();
		FacesViews.addMappings(event.getServletContext());
		CacheInitializer.loadProviderAndRegisterFilter(event.getServletContext());
	}