Unexpected RuntimeException

WicketMessage: Can't instantiate page using constructor public com.valleyfilmfest.web.pages.film.FilmViewPage(org.apache.wicket.PageParameters) and argument 0 = "2191"

Root cause:

java.lang.NullPointerException
at com.valleyfilmfest.web.pages.film.FilmViewPage.<init>(FilmViewPage.java:160)
at com.valleyfilmfest.web.pages.film.FilmViewPage.<init>(FilmViewPage.java:64)
at java.lang.reflect.Constructor.newInstance(Constructor.java:527)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:151)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:89)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:281)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:296)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:219)
at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1188)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1265)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1366)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:499)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387)
at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
at java.lang.Thread.run(Thread.java:748)

Complete stack:

org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor public com.valleyfilmfest.web.pages.film.FilmViewPage(org.apache.wicket.PageParameters) and argument 0 = "2191"
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:172)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:89)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:281)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:296)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:219)
at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1188)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1265)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1366)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:499)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387)

java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:527)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:151)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:89)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:281)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:296)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:219)
at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1188)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1265)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1366)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:499)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:387)

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