+ The report file : sitemap.xml.rptdesign does not exist or contains errors.

org.eclipse.birt.report.exception.ViewerException: The report file : sitemap.xml.rptdesign does not exist or contains errors.
	at org.eclipse.birt.report.context.ViewerAttributeBean.getDesignHandle(ViewerAttributeBean.java:596)
	at org.eclipse.birt.report.context.ViewerAttributeBean.__init(ViewerAttributeBean.java:252)
	at org.eclipse.birt.report.context.BaseAttributeBean.init(BaseAttributeBean.java:228)
	at org.eclipse.birt.report.context.ViewerAttributeBean.<init>(ViewerAttributeBean.java:150)
	at org.eclipse.birt.report.context.BirtContext.__init(BirtContext.java:42)
	at org.eclipse.birt.report.context.BaseContext.<init>(BaseContext.java:69)
	at org.eclipse.birt.report.context.BirtContext.<init>(BirtContext.java:30)
	at org.eclipse.birt.report.servlet.BirtEngineServlet.__getContext(BirtEngineServlet.java:68)
	at org.eclipse.birt.report.servlet.BaseReportEngineServlet.doGet(BaseReportEngineServlet.java:149)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:529)
	at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:332)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	at org.eclipse.birt.report.servlet.BaseReportEngineServlet.service(BaseReportEngineServlet.java:113)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:197)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:142)
	at org.eclipse.birt.report.filter.ViewerFilter.doFilter(ViewerFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:142)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:142)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:88)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:83)
	at org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:314)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:643)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72)
	at org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:604)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:643)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:398)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:935)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1831)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:973)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:491)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	at java.base/java.lang.Thread.run(Thread.java:1474)