Cannot use saved reports

[Peter2121]

I tried stable release and snapshot from https://github.com/mcastillob/pivot4j
I can create a report and save it, but I cannot use the saved report - I always get the exception:

15:36:55.419 ERROR [Pivot4JExceptionHandler] - Unhandled exception has occurred
javax.faces.application.ViewExpiredException: /index.xhtmlNo saved view state could be found for the view identifier: /index.xhtml
        at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:181) ~[myfaces-impl-2.2.0.jar:2.2.0]
        at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:196) [myfaces-impl-2.2.0.jar:2.2.0]
        at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:143) [myfaces-impl-2.2.0.jar:2.2.0]
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:196) [myfaces-api-2.2.0.jar:2.2.0]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) [catalina.jar:8.0.50]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.50]
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.0.50]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) [catalina.jar:8.0.50]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.50]
        at org.pivot4j.analytics.logging.Log4jServletFilterFallback.doFilter(Log4jServletFilterFallback.java:51) [classes/:?]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) [catalina.jar:8.0.50]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.50]
        at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66) [log4j-core-2.0-beta9.jar:2.0-beta9]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) [catalina.jar:8.0.50]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.50]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) [catalina.jar:8.0.50]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94) [catalina.jar:8.0.50]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) [catalina.jar:8.0.50]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [catalina.jar:8.0.50]
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620) [catalina.jar:8.0.50]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [catalina.jar:8.0.50]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502) [catalina.jar:8.0.50]
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132) [tomcat-coyote.jar:8.0.50]
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684) [tomcat-coyote.jar:8.0.50]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539) [tomcat-coyote.jar:8.0.50]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495) [tomcat-coyote.jar:8.0.50]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_162]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_162]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.50]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_162]

Probably, it's a normal situation that there is no saved view, but why does not it create a new one??

[Peter2121]

I have no such problem, building the mentioned snapshot with mojarra (the profile is present in pom).