java.lang.NoClassDefFoundError: This exception has no message.

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org.apache.http.config.Lookup class is in httpcore-4.3.jar not in httpclient-4.3.1.jar

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java.lang.NoClassDefFoundError:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:120)
at oracle.reports.jsp.ReportTagExtraInfo.class$(ReportTagExtraInfo.java:13)
at oracle.reports.jsp.ReportTagExtraInfo.getVariableInfo(ReportTagExtraInfo.java:15)
at oracle.jsp.parse.JspRTTag.getDefinedObjects(JspRTTag.java:255)
at oracle.jsp.parse.OpenJspTagHandler.defineBeans(OpenJspTagHandler.java:258)
at oracle.jsp.parse.OpenJspTagHandler.validateTagAttributes(OpenJspTagHandler.java:221)
at oracle.jsp.parse.JspParseTag.parse(JspParseTag.java:672)
at oracle.jsp.parse.OpenJspTagHandler.parse(OpenJspTagHandler.java:467)
at oracle.jsp.parse.JspParseTag.parseNextTag(JspParseTag.java:548)
at oracle.jsp.parse.JspParseTagFile.parse(JspParseTagFile.java:160)
at oracle.jsp.parse.OracleJsp2Java.transform(OracleJsp2Java.java:40)
at oracle.jsp.runtimev2.JspPageCompiler.attemptCompilePage(JspPageCompiler.java:295)
at oracle.jsp.runtimev2.JspPageCompiler.compilePage(JspPageCompiler.java:171)
at oracle.jsp.runtimev2.JspPageInfo.compileAndLoad(JspPageInfo.java:338)
at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:481)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:255)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:407)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:59)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:523)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:269)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:735)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:151)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)

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