500 Servlet Exception

java.lang.NullPointerException
	at _compere_0firstrankOP_0top10__jsp._jspService(/compere_firstrankOP_top10.jsp:38)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
	at com.caucho.jsp.Page.subservice(Page.java:506)
	at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
	at cn.NoFilter.doFilter(NoFilter.java:51)
	at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
	at com.uc.filter.SqlInjectionFilter.doFilter(SqlInjectionFilter.java:99)
	at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
	at com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:344)
	at com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274)
	at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
	at java.lang.Thread.run(Thread.java:534)