java.lang.NullPointerException
    at org.ametys.web.filter.DefaultWebContentFilter$DefaultFilterSearchContext.getSharedContentsExpression(DefaultWebContentFilter.java:657)
    at org.ametys.web.filter.DefaultWebContentFilter$DefaultFilterSearchContext.getFullExpression(DefaultWebContentFilter.java:528)
    at org.ametys.web.filter.DefaultWebContentFilter.getXPathQuery(DefaultWebContentFilter.java:304)
    at org.ametys.web.filter.DefaultWebContentFilter.getMatchingContents(DefaultWebContentFilter.java:280)
    at org.ametys.web.filter.DefaultWebContentFilter.getMatchingContents(DefaultWebContentFilter.java:215)
    at org.ametys.web.filter.ContentFilterHelper.getMatchingContentIds(ContentFilterHelper.java:176)
    at org.ametys.plugins.newsletter.auto.AutomaticNewslettersEngine.getFilterResults(AutomaticNewslettersEngine.java:435)
    at org.ametys.plugins.newsletter.auto.AutomaticNewslettersEngine.createAndValidateAutomaticNewsletter(AutomaticNewslettersEngine.java:363)
    at org.ametys.plugins.newsletter.auto.AutomaticNewslettersEngine.createAutomaticNewsletters(AutomaticNewslettersEngine.java:339)
    at org.ametys.plugins.newsletter.auto.AutomaticNewslettersEngine.createAutomaticNewsletters(AutomaticNewslettersEngine.java:297)
    at org.ametys.plugins.newsletter.auto.AutomaticNewslettersEngine.run(AutomaticNewslettersEngine.java:228)
    at java.lang.Thread.run(Thread.java:748)

<!-- 	A LA UNE 	-->
			<extension point="org.ametys.cms.filter.ContentFilterExtensionPoint"
		           class="org.ametys.web.filter.StaticWebContentFilter" 
				   id="newsletter.actus.une_lorient.filter">
		           	<title i18n="false">A la une</title>
		           	<description i18n="false">Filtre pour le contenu "A la une" pour la newsletter automatique</description>
		          	<content-types>
		            	<type id="org.ametys.plugins.news.Content.news" />
		           	</content-types>
		            <tags>
		            	<tag key="UNE_LORIENT" />
		            </tags>
		            <view>abstract</view>
		            <context type="other-sites" lang="current" />
		            <max-result>1</max-result>
		            <sort-information>
		                 <sort metadataId="lastValidationDate" ascending="false" />
		            </sort-information>
			</extension>