Impossible to load a specific document

com.xpn.xwiki.XWikiException: Error number 3202 in 3: Exception while reading document [xwiki:XWiki.renniepak1()]
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:1155)
	at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:395)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:2184)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:2246)
       [...]
Caused by: com.xpn.xwiki.XWikiException: Error number 3202 in 3: Exception while reading document [xwiki:XWiki.Notifications.Code.ToggleableFilterPreferenceClass()]
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:1155)
	at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:395)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:2184)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:2246)
	at com.xpn.xwiki.XWiki.getXClass(XWiki.java:7058)
	at com.xpn.xwiki.objects.classes.BaseClass.newCustomClassInstance(BaseClass.java:1349)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:1088)
	... 18 common frames omitted
Caused by: com.xpn.xwiki.XWikiException: Error number 3212 in 3: Exception while loading object {0} of class {1} and number {2}
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiCollectionInternal(XWikiHibernateStore.java:1618)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:1103)
	... 24 common frames omitted
Caused by: com.xpn.xwiki.XWikiException: Error number 3212 in 3: Exception while loading object {0} of class {1}, number {2} and property {3}
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiCollectionInternal(XWikiHibernateStore.java:1594)
	... 25 common frames omitted
Caused by: com.xpn.xwiki.XWikiException: Error number 3212 in 3: Exception while loading property sheet of object XWiki.Notifications.Code.ToggleableFilterPreferenceClass
	at com.xpn.xwiki.store.XWikiHibernateStore.lambda$loadXWikiProperty$7(XWikiHibernateStore.java:1751)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.execute(XWikiHibernateBaseStore.java:826)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.executeRead(XWikiHibernateBaseStore.java:902)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiProperty(XWikiHibernateStore.java:1721)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiCollectionInternal(XWikiHibernateStore.java:1559)
	... 25 common frames omitted
Caused by: org.hibernate.NonUniqueObjectException: A different object with the same identifier value was already associated with the session : [com.xpn.xwiki.objects.StringProperty#<property><sheet></sheet></property>]
	at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219)
	at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:327)
	at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:108)
	at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:74)
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
	at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1231)
	at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1220)
	at org.hibernate.internal.SessionImpl.load(SessionImpl.java:996)
	at org.hibernate.engine.spi.SessionDelegatorBaseImpl.load(SessionDelegatorBaseImpl.java:820)
	at com.xpn.xwiki.store.XWikiHibernateStore.lambda$loadXWikiProperty$7(XWikiHibernateStore.java:1724)
	... 29 common frames omitted