Error on Tomcat Console

[alessandro lagostena]

Hello Gent's I'm new of cocoon and new of this mailing list. I have installed cocoon on 2 system 1) Windows 2000     jd1.3     Apache 2.0     Tomcat 4.1.27     Cocoon 2.0 2) Sun Solaris     jd1.3     Apache 2.0     Tomcat 4.1.27     Cocoon 2.0 On both the system i start  apache + tomcat  and whe i access at the home page of cocoon in the log files or the console of tomcat i found the follow message  : Press [Ctrl]+[C] to abort Logging Error: Unknown error writing event. java.lang.NullPointerException         at org.apache.coyote.tomcat4.CoyoteRequestFacade.getRequestURI(CoyoteRequestFacade.java:350)         at org.apache.cocoon.environment.http.HttpRequest.getRequestURI(HttpRequest.java:144)         at org.apache.cocoon.util.log.CocoonLogFormatter.getURI(CocoonLogFormatter.java:155)         at org.apache.cocoon.util.log.CocoonLogFormatter.formatPatternRun(CocoonLogFormatter.java:102)         at org.apache.cocoon.util.log.ExtensiblePatternFormatter.format(ExtensiblePatternFormatter.java:334)         at org.apache.log.output.AbstractOutputTarget.format(AbstractOutputTarget.java:133)         at org.apache.log.output.AbstractOutputTarget.doProcessEvent(AbstractOutputTarget.java:92)         at org.apache.log.output.AbstractTarget.processEvent(AbstractTarget.java:70)         at org.apache.log.Logger.output(Logger.java:559)         at org.apache.log.Logger.output(Logger.java:538)         at org.apache.log.Logger.debug(Logger.java:110)         at org.apache.cocoon.servlet.CocoonServlet.getEnvironment(CocoonServlet.java:757)         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:633)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2416)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)         at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)         at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)         at java.lang.Thread.run(Thread.java:479) Logging Error: Unknown error writing event. etc The same error is repated a lot of times , like every time a page is shoed from cocoon Can some-one help  me ? Thanks for the support Regards LAGO