500 Servlet Exception

[show] java.lang.NullPointerException

javax.el.ELException: java.lang.NullPointerException
	at javax.el.BeanELResolver.getValue(BeanELResolver.java:203)
	at com.caucho.jsp.el.PageContextELResolver.getValue(PageContextELResolver.java:175)
	at com.caucho.el.ArrayResolverExpr.getValue(ArrayResolverExpr.java:148)
	at com.caucho.el.PathExpr.getValue(PathExpr.java:142)
	at com.caucho.el.Expr.evalObject(Expr.java:224)
	at _jsp._comment._list__jsp._jspService(comment/list.jsp:376)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:578)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
	at org.gelivable.web.EnvFilter.doFilter(EnvFilter.java:60)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at org.gelivable.web.gzip.GZIPFilter.doFilter(GZIPFilter.java:86)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
	at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:192)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:273)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
	at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:730)
	at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:649)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException