Hello,

I am facing the following problem

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassCastException: org.apache.tiles.jsp.taglib.UseAttributeTag 
cannot be cast to javax.servlet.jsp.tagext.Tag
        at org.apache.jasper.runtime.TagHandlerPool.get(TagHandlerPool.java:120)
        at 
org.apache.jsp.mmr.jsp.templates.layout_005fadmin_005fwindow_jsp._jspService(layout_005fadmin_005fwindow_jsp.java:100)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:690)
        at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:477)
        at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
        at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
        at 
org.apache.tiles.request.servlet.ServletRequest.forward(ServletRequest.java:265)
        at 
org.apache.tiles.request.servlet.ServletRequest.doForward(ServletRequest.java:228)
        at 
org.apache.tiles.request.AbstractClientRequest.dispatch(AbstractClientRequest.java:57)
        at 
org.apache.tiles.request.render.DispatchRenderer.render(DispatchRenderer.java:47)
        at 
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:259)
        at 
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:397)
        at 
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:238)
        at 
org.apache.tiles.TilesContainerWrapper.render(TilesContainerWrapper.java:103)
        at 
org.apache.tiles.impl.mgmt.CachingTilesContainer.render(CachingTilesContainer.java:126)
        at 
org.apache.struts2.views.tiles.TilesResult.doExecute(TilesResult.java:161)
        at 
org.apache.struts2.result.StrutsResultSupport.execute(StrutsResultSupport.java:208)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:373)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:277)
        at 
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:253)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:260)
        at 
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:52)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.doIntercept(ConversionErrorInterceptor.java:139)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:134)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:134)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:199)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:69)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:115)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:88)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:246)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:99)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:139)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:157)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:174)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:123)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:171)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:201)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:193)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.meritconinc.mmr.interceptor.MmrTrackingInterceptor.intercept(MmrTrackingInterceptor.java:95)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:88)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:134)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.meritconinc.mmr.interceptor.MmrInterceptor.intercept(MmrInterceptor.java:141)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
com.meritconinc.mmr.interceptor.RedirectMessageInterceptor.doIntercept(RedirectMessageInterceptor.java:56)
        at 
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247)
        at 
org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:53)
        at 
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:577)
        at 
org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
        at 
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:143)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)
        at 
org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
        at 
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
        at 
org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
        at 
org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
        at 
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
        at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
        at 
org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:149)
        at 
org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at 
org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at 
com.meritconinc.mmr.filter.CharsetFilter.doFilter(CharsetFilter.java:38)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
        at 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
        at 
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

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