httpstatus500-156\r
    typeexceptionreport\r
    message156\r
    descriptiontheserverencounteredaninternalerrorthatpreventeditfromfulfillingthisrequest.\r
    exception
    javang.arrayindexoutofboundsexception:156
    sun.reflect.generatedmethodessor38.invoke(unknownsource)
    sun.reflect.delegatingmethodessorimpl.invoke(unknownsource)
    javang.reflect.method.invoke(unknownsource)
    org.apache.struts2.interceptor.validation.annotationvalidationinterceptor.dointercept(annotationvalidationinterceptor.java:68)
    org.apache.struts2.interceptor.multiselectinterceptor.intercept(multiselectinterceptor.java:75)
    org.apache.struts2.interceptor.checkboxinterceptor.intercept(checkboxinterceptor.java:94)
    org.apache.struts2.interceptor.fileuploadinterceptor.intercept(fileuploadinterceptor.java:243)
    org.apache.struts2.interceptor.debugging.debugginginterceptor.intercept(debugginginterceptor.java:267)
    org.apache.struts2.interceptor.servletconfiginterceptor.intercept(servletconfiginterceptor.java:164)
    org.apache.struts2.impl.strutsactionproxy.execute(strutsactionproxy.java:52)
    org.apache.struts2.dispatcher.dispatcher.serviceaction(dispatcher.java:485)
    org.apache.struts2.dispatcher.ng.executeoperations.executeaction(executeoperations.java:77)
    org.apache.struts2.dispatcher.ng.filter.strutsprepareandexecutefilter.dofilter(strutsprepareandexecutefilter.java:91)
    \r
    notethefullstacktraceoftherootcauseisavableintheapachetomcat/7.0.62logs.apachetomcat/7.0.62