rk2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.modeldriveninterceptor.intercept(modeldriveninterceptor.java:100)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.scopedmodeldriveninterceptor.intercept(scopedmodeldriveninterceptor.java:141)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    org.apache.struts2.interceptor.debugging.debugginginterceptor.intercept(debugginginterceptor.java:267)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.chaininginterceptor.intercept(chaininginterceptor.java:142)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.prepareinterceptor.dointercept(prepareinterceptor.java:166)
    com.opensymphony.xwork2.interceptor.ccthodfilterinterceptor.intercept(methodfilterinterceptor.java:98)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.i18ninterceptor.intercept(i18ninterceptor.java:176)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    org.apache.struts2.interceptor.servletconfiginterceptor.intercept(servletconfiginterceptor.java:164)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.aliasinterceptor.intercept(aliasinterceptor.java:190)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    com.opensymphony.xwork2.interceptor.exceptionmappinginterceptor.intercept(exceptionmappinginterceptor.java:187)
    com.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)
    org.apache.struts2.impl.s