The use of character È will generate error in the log

2012-04-24 22:26:23,455 WARN [StreamsCompletionService::thread-1] [streams.confluence.renderer.ContentEntityRendererFactory] stripGadgetMacros Unable to parse content for entity 'Re: È' at /pages/viewpage.action?pageId=589831&focusedCommentId=589832#comment-589832
 -- url: /rest/activity-stream/1.0/config | userName: kahloun.foong | referer: http://localhost:8421/plugins/servlet/gadgets/ifr?container=atlassian&mid=34360197120&country=GB&lang=en&view=default&view-params=%7B%22writable%22%3A%22true%22%7D&st=atlassian%3ABWFDK%2FmZtJpLrFxIEnme0VNW2mfm4gi%2BigP%2BPQtmuRMFbuSoBRrPyXbNh11NzCE8T9eSTWPvS36ICCfzXrQEtkPhiKucapiC%2BIsGg2bwoh1fogqWglo6QzJmk3aEzmdrkcJBebcyE%2FmchWqaeWO5jEzb37np4vxt4S4ktMm6wdjJuGkDywzhmeL2i7MwP4OKPL8cI9Pcbz5GWAQ6%2FgNEhGChGtVO54NXz5nFYH%2FnWGdKwv5pD5%2BYW1xz76l59CYa5%2FcXQz%2B5Y3FN3o7AgEZbzkmJ33dbfXFTfZ8RaPK00rbU3HsDWa3vS6W91L9oJwwku2g9%2B1tZkOjotv04AYVgenLRjSkX1g62TkHFpbN0%2BxqyFr81HONq20a%2FplD%2Bzx9IN8Nw5Q%3D%3D&up_isConfigured=true&up_isReallyConfigured=false&up_title=Activity+Stream&up_titleRequired=true&up_numofentries=10&up_refresh=false&up_maxProviderLabelCharacters=50&up_rules=&up_renderingContext=&up_keys=&up_itemKeys=&up_username=&url=http%3A%2F%2Flocalhost%3A8421%2Frest%2Fgadgets%2F1.0%2Fg%2Fcom.atlassian.streams.confluence%3Aactivitystream-gadget%2Fgadgets%2Fconf-activitystream-gadget.xml&libs=auth-refresh
org.xml.sax.SAXParseException: The entity "Egrave" was referenced, but not declared.
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer.stripGadgetMacros(ContentEntityRendererFactory.java:253)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer.content(ContentEntityRendererFactory.java:225)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer.access$400(ContentEntityRendererFactory.java:96)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer$3.get(ContentEntityRendererFactory.java:198)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer$3.get(ContentEntityRendererFactory.java:194)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer$2.apply(ContentEntityRendererFactory.java:163)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer$2.apply(ContentEntityRendererFactory.java:160)
	at com.atlassian.streams.confluence.renderer.ContentEntityRendererFactory$ContentEntityRenderer.renderContentAsHtml(ContentEntityRendererFactory.java:109)