java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.doculibre.constellio.search.SolrFacetUtils.getPossibleValues(UnknownSource)
at com.doculibre.constellio.wicket.panels.facets.FacetPanel$1.load(Unknown Source)
at org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:114)
at com.doculibre.constellio.wicket.panels.facets.FacetPanel.getPossibleValues(UnknownSource)
at com.doculibre.constellio.wicket.panels.facets.FacetPanel.access$200(Unknown Source)
at com.doculibre.constellio.wicket.panels.facets.FacetPanel$7.load(Unknown Source)
at org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:114)
at org.apache.wicket.Component.getModelObject(Component.java:1565)
at org.apache.wicket.markup.html.list.ListView.getList(ListView.java:173)
at org.apache.wicket.markup.html.list.PageableListView.getPageCount(PageableListView.java:103)
at com.doculibre.constellio.wicket.panels.facets.FacetPanel.(UnknownSource)
at com.doculibre.constellio.wicket.panels.facets.FacetsPanel$2$2.newFoldableSection(Unknown Source)
at com.doculibre.constellio.wicket.panels.fold.FoldableSectionPanel.initComponents(UnknownSource)
at com.doculibre.constellio.wicket.panels.fold.FoldableSectionPanel.(UnknownSource)
at com.doculibre.constellio.wicket.panels.fold.CookieFoldableSectionPanel.(UnknownSource)
at com.doculibre.constellio.wicket.panels.facets.FacetFoldableSectionPanel.(UnknownSource)
at com.doculibre.constellio.wicket.panels.facets.FacetsPanel$2$2.(Unknown Source)
at com.doculibre.constellio.wicket.panels.facets.FacetsPanel$2.populateItem(Unknown Source)
at org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:573)
at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:127)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1009)
at org.apache.wicket.Component.beforeRender(Component.java:1041)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1590)
at org.apache.wicket.Component.onBeforeRender(Component.java:3727)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1009)
at org.apache.wicket.Component.beforeRender(Component.java:1041)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1590)
at org.apache.wicket.Component.onBeforeRender(Component.java:3727)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1009)
at org.apache.wicket.Component.beforeRender(Component.java:1041)
at org.apache.wicket.Component.prepareForRender(Component.java:2167)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(AjaxRequestTarget.java:762)
at org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(AjaxRequestTarget.java:662)
at org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java:577)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:104)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1245)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1316)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:532)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at com.doculibre.constellio.filters.SetCharacterEncodingFilter.doFilter(UnknownSource)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at java.lang.Thread.run(Thread.java:636)

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