엔빌더랑 엔메일을 쓰고 있는데요

엔메일은 제대로 설치 한것 같은데 엔메일을 구동하면 회원가입이 안뜹니다

회원가입이라는 메뉴 자체가 없습니다

http://mail.cyberformula.pe.kr:8080

이구요

그래서 엔빌더에서 회원가입해서 메일서비스 가입 되도록 하려고 했는데

엔빌더에서 메일을 클릭하면 회원정보를 엔메일에 입력한다고 나오다가


Error: 500
Location: /source/user/interlocker/link_user_insert.jsp
Internal Servlet Error:

javax.servlet.ServletException
at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459)
at source.user.i_00025terlocker._0002fsource_0002fuser_0002finterlocker_0002flink_0005fuser_0005finsert_0002ejsplink_0005fuser_0005finsert_jsp_0._jspService(_0002fsource_0002fuser_0002finterlocker_0002flink_0005fuser_0005finsert_0002ejsplink_0005fuser_0005finsert_jsp_0.java:704)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.java:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:282)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
at java.lang.Thread.run(Thread.java:479)
Root cause:
java.lang.NullPointerException
at user.table.CheckUser.getCount(CheckUser.java:141)
at source.user.i_00025terlocker._0002fsource_0002fuser_0002finterlocker_0002flink_0005fuser_0005finsert_0002ejsplink_0005fuser_0005finsert_jsp_0._jspService(_0002fsource_0002fuser_0002finterlocker_0002flink_0005fuser_0005finsert_0002ejsplink_0005fuser_0005finsert_jsp_0.java:471)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.java:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:282)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
at org.apache.tomcat.core.Handler.service(Handler.java:287)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
at java.lang.Thread.run(Thread.java:479)

이런 에러가 뜹니다

어떻게 해결해야 하는걸까요