Outcome of the investigation is that org.kie.internal.persistence.jcr#buildCommandService(Long, KieBase, KieSessionConfiguration, Environment) method is trying to fetch a proper class and constructor of it. However, org.drools.persistenceSimpleSessionCommandService which is a basic session command service) has a constructor version of Long.class for sessionId. The is a problem is we try to fetch in org.kie.internal.persistence.jcr#buildCommandService(Long, KieBase, KieSessionConfiguration, Environment) method to get a constructor for Integer.class and therefore simply hitting to the exception of java.lang.NoSuchMethodException. Simply changing Integer.class to Long.class would work for the particular issue since there will be no exception and thus session will be found in the persistence layer.