org.apache.turbine.TurbineException: java.lang.NullPointerException
	at edu.umich.engin.cpd.commons.pipelines.valve.CommonsTargetValve.invoke(CommonsTargetValve.java:111)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at edu.umich.engin.cpd.commons.pipelines.valve.CommonsRunModulesValve.invoke(CommonsRunModulesValve.java:65)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at edu.umich.engin.cpd.commons.pipelines.valve.CommonsActionValve.invoke(CommonsActionValve.java:72)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at org.apache.turbine.pipeline.DefaultSessionValidationValve.invoke(DefaultSessionValidationValve.java:122)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at org.apache.turbine.pipeline.DefaultSessionTimeoutValve.invoke(DefaultSessionTimeoutValve.java:110)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at org.apache.turbine.pipeline.DetermineTargetValve.invoke(DetermineTargetValve.java:122)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at org.apache.turbine.pipeline.DetermineActionValve.invoke(DetermineActionValve.java:108)
	at org.apache.turbine.pipeline.TurbinePipeline.invokeNext(TurbinePipeline.java:229)
	at org.apache.turbine.pipeline.TurbinePipeline.invoke(TurbinePipeline.java:211)
	at org.apache.turbine.Turbine.doGet(Turbine.java:298)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:529)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:199)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
	at edu.umich.engin.cpd.iweb.open.filters.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:24)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:642)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:416)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:348)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:285)
	at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:168)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:355)
	at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:54)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:396)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:937)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.NullPointerException
	at org.apache.fulcrum.template.TurbineTemplateService.handleRequest(TurbineTemplateService.java:276)
	at org.apache.fulcrum.template.TurbineTemplate.handleRequest(TurbineTemplate.java:104)
	at org.apache.turbine.modules.Module.handleRequest(Module.java:185)
	at org.apache.turbine.pipeline.Renderer.render(Renderer.java:112)
	at org.apache.turbine.modules.Module.renderTarget(Module.java:291)
	at edu.umich.engin.cpd.commons.pipelines.renderer.CommonsRenderer.renderTarget(CommonsRenderer.java:85)
	at edu.umich.engin.cpd.commons.pipelines.renderer.CommonsHtmRenderer.render(CommonsHtmRenderer.java:44)
	at edu.umich.engin.cpd.commons.pipelines.valve.CommonsTargetValve.invoke(CommonsTargetValve.java:106)
	... 62 more