Drools Engine not able to load rules in spring-Boot project

am using the Drools 7.5.0-final in the spring Boot project.

I am working on a multi-module Gradle project. Rules and kmodule.xml is present in the sub-module project. This module is packaged as a Jar inside a fat spring boot Jar file.

I am building the container from the classpath.

KieContainer kContainer = kieService.newKieClasspathContainer();
on server start-up (java -jar) it loads the Kmodule.xml and prints all the kbase and sessionName.

But when I fire rules it returns zero rules fired.

It works fine when I run as spring boot app from Eclipse. Please help.