VelocityViewServlet : Error processing a template for path '/pages/vernivelfeed.html'

Invocation of method 'render' in class net.universia.commons.velocity.tools.FeedTool threw exception com.sun.syndication.io.FeedException: Invalid rss_1.0 feed, missing channel description at VM_global_library.vm[line 658, column 6]
com.sun.syndication.io.FeedException: Invalid rss_1.0 feed, missing channel description
	at com.sun.syndication.io.impl.RSS090Generator.checkNotNullAndLength(RSS090Generator.java:128)
	at com.sun.syndication.io.impl.RSS10Generator.checkChannelConstraints(RSS10Generator.java:100)
	at com.sun.syndication.io.impl.RSS090Generator.addChannel(RSS090Generator.java:97)
	at com.sun.syndication.io.impl.RSS090Generator.populateFeed(RSS090Generator.java:87)
	at com.sun.syndication.io.impl.RSS090Generator.generate(RSS090Generator.java:56)
	at com.sun.syndication.io.WireFeedOutput.outputJDom(WireFeedOutput.java:207)
	at com.sun.syndication.io.WireFeedOutput.output(WireFeedOutput.java:147)
	at com.sun.syndication.io.SyndFeedOutput.output(SyndFeedOutput.java:97)
	at net.universia.rayuela.feed.Feed.render(Feed.java:210)
	at net.universia.rayuela.feed.Feed.render(Feed.java:216)
	at net.universia.commons.velocity.tools.FeedTool.render(FeedTool.java:141)
	at sun.reflect.GeneratedMethodAccessor380.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:389)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:378)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:270)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:262)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:342)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:212)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:247)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
	at org.apache.velocity.Template.merge(Template.java:328)
	at org.apache.velocity.Template.merge(Template.java:235)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.performMerge(VelocityViewServlet.java:805)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.mergeTemplate(VelocityViewServlet.java:762)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doRequest(VelocityViewServlet.java:555)
	at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doGet(VelocityViewServlet.java:509)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
	at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
	at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:131)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
	at com.caucho.server.webapp.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:298)
	at com.caucho.server.webapp.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:116)
	at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1078)
	at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:295)
	at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:396)
	at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:347)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:120)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:97)
	at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
	at com.caucho.server.httpcache.ProxyCacheFilterChain.doRequestCacheable(ProxyCacheFilterChain.java:252)
	at com.caucho.server.httpcache.ProxyCacheFilterChain.doFilter(ProxyCacheFilterChain.java:193)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
	at com.caucho.server.hmux.HmuxRequest.handleInvocation(HmuxRequest.java:473)
	at com.caucho.server.hmux.HmuxRequest.handleRequestImpl(HmuxRequest.java:374)
	at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:341)
	at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1345)
	at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1301)
	at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1285)
	at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1193)
	at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:992)
	at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
	at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
	at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
	at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
	at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
	at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)