java.lang.NoClassDefFoundError: org/apache/struts/taglib/TagUtils -

i deploying application on weblogic 10.3.6. using struts 1.3.10, have libraries shared on weblogic, , referencing on weblogix.xml file. application runs fine when use libraries on local, when call shared libraries on weblogic.xml following error:

    <jul 19, 2013 11:24:23 vet> <error> <http> <bea-101017> <[servletcontext@5597787[app:islr module:islrweb path:/islrweb spec-version:null], request: workmanager: default, version: 1, scheduled=true, started=true, started time: 2216 ms [ /islrweb/index.jsp http/1.1 user-agent: java1.6.0_31 accept: text/html, image/gif, image/jpeg, */*; q=.2 connection: keep-alive  ]] root cause of servletexception. java.lang.noclassdeffounderror: org/apache/struts/taglib/tagutils     @ org.apache.struts.taglib.html.htmltag.dostarttag(htmltag.java:94)     @ jsp_servlet.__index._jspservice(__index.java:110)     @ weblogic.servlet.jsp.jspbase.service(jspbase.java:34)     @ weblogic.servlet.internal.stubsecurityhelper$servletserviceaction.run(stubsecurityhelper.java:227)     @ weblogic.servlet.internal.stubsecurityhelper.invokeservlet(stubsecurityhelper.java:125)     truncated. see log file complete stacktrace caused by: java.lang.classnotfoundexception: org.apache.struts.taglib.tagutils     @ weblogic.utils.classloaders.genericclassloader.findlocalclass(genericclassloader.java:297)     @ weblogic.utils.classloaders.genericclassloader.findclass(genericclassloader.java:270)     @ weblogic.utils.classloaders.changeawareclassloader.findclass(changeawareclassloader.java:64)     @ java.lang.classloader.loadclass(classloader.java:423)     @ java.lang.classloader.loadclass(classloader.java:356)     truncated. see log file complete stacktrace >  <jul 19, 2013 11:24:23 vet> <error> <kernel> <bea-000802> <executerequest failed  java.lang.nullpointerexception. java.lang.nullpointerexception     @ weblogic.servlet.internal.servletstubimpl.prepareservlet(servletstubimpl.java:531)     @ weblogic.servlet.internal.servletstubimpl.execute(servletstubimpl.java:244)     @ weblogic.servlet.internal.servletstubimpl.execute(servletstubimpl.java:184)     @ weblogic.servlet.internal.requestdispatcherimpl.invokeservlet(requestdispatcherimpl.java:529)     @ weblogic.servlet.internal.requestdispatcherimpl.forward(requestdispatcherimpl.java:253)     truncated. see log file complete stacktrace >