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The Unable install webchat

Question asked by xsw2012 on Mar 28, 2012

I download the webchat from's official website,when i install error

 

 

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /setup-index.jsp at line 47
44:         }
45:         catch (XMPPException xe) {
46:             // If anonymous login disabled.
47:             if (xe.getXMPPError().getCode() == 403) {
48:                 errors.put("connect", "Anonymous login test failed. Ensure that anonymous logins are enabled on the server.");
49:             }
50:             else {
      Stacktrace:     
           org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)     
           org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)     
           org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)     
           org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)     
           javax.servlet.http.HttpServlet.service(HttpServlet.java:717)     
           org.jivesoftware.webchat.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:45)     
           org.jivesoftware.webchat.SetupFilter.doFilter(SetupFilter.java:92)

 

root cause

     java.lang.NullPointerException     
           org.apache.jsp.setup_002dindex_jsp._jspService(setup_002dindex_jsp.java:93)     
           org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)     
           javax.servlet.http.HttpServlet.service(HttpServlet.java:717)     
           org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)     
           org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)     
           org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)     
           javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
           org.jivesoftware.webchat.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:45)     
           org.jivesoftware.webchat.SetupFilter.doFilter(SetupFilter.java:92)


help me please

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