Seeing java.lang.NoSuchMethodError at runtime in JBoss EAP

Issue

• We are Seeing the following error during runtime in server.log:

java.lang.NoSuchMethodError org.apache.commons.lang.StringUtils.isBlank(Ljava/lang/String;)Z

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/siprocess]] (MSC service thread 1-4) Exception sending context initialized event to listener instance of class com.olr.listner.SpringListner: java.lang.NoSuchMethodError: org.springframework.util.Assert.noNullElements([Ljava/lang/Object;Ljava/lang/String;)V

• Getting issue unable to find Method "NoSuchMethodError" for one of my application class's method. We are migrating our product from jboss-as-7.1.1-final running on window platform to EAP 6.3 on domain mode under Linux platform. War has been deployed successfully, but while accessing the application it through "NoSuchMethodError" ERROR on EAP 6 version, however same war is working without any issue on JBoss AS version.