Caused by: java.lang.NullPointerException
	at org.apache.xml.serializer.ToStream.writeAttrString(ToStream.java:2105)
	at org.apache.xml.serializer.ToStream.processAttributes(ToStream.java:2085)
	at org.apache.xml.serializer.ToStream.closeStartTag(ToStream.java:2643)
	at org.apache.xml.serializer.ToStream.characters(ToStream.java:1409)
	at org.apache.xalan.transformer.TransformerIdentityImpl.characters(TransformerIdentityImpl.java:1126)
	at org.apache.cocoon.xml.XMLUtils.data(XMLUtils.java:324)
	at org.apache.cocoon.xml.XMLUtils.createElement(XMLUtils.java:527)
	at org.ametys.plugins.core.impl.userpref.JdbcXmlUserPreferencesStorage._getPreferencesXmlBytes(JdbcXmlUserPreferencesStorage.java:386)
	at org.ametys.plugins.core.impl.userpref.JdbcXmlUserPreferencesStorage.setUserPreferences(JdbcXmlUserPreferencesStorage.java:218)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.ametys.runtime.plugin.component.PluginsComponentManager$ComponentInvocationHandler.invoke(PluginsComponentManager.java:177)
	at com.sun.proxy.$Proxy36.setUserPreferences(Unknown Source)
	at org.ametys.core.userpref.UserPreferencesManager.setUserPreferences(UserPreferencesManager.java:213)
	at org.ametys.plugins.mobileapp.UserPreferencesHelper.setNotificationSettings(UserPreferencesHelper.java:321)
	at org.ametys.plugins.mobileapp.UserPreferencesHelper.setNotificationSettings(UserPreferencesHelper.java:285)
	at org.ametys.plugins.mobileapp.action.SetNotificationsPrefsAction.doAction(SetNotificationsPrefsAction.java:75)
	at org.ametys.plugins.mobileapp.action.AbstractLoggedAction.act(AbstractLoggedAction.java:54)
	at org.ametys.plugins.mobileapp.action.SetNotificationsPrefsAction.act(SetNotificationsPrefsAction.java:34)
	at org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode.invoke(ActTypeNode.java:125)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)

http://mstlucemobileapp-site.ironman.anyware.corp/_plugins/mobileapp/1/intranet/set-notifications-prefs?token=dXRpbGlzYXRldXJzI2ZyYXZldGllciNjMlptZUNtbXBYRWREdklpQ0R2dFZSTUc5aUdqRkRVWm1JWjI1VlV1V3l3cFBLc2tMcm9xTnBkUVg2a1pWVk5q

{
  "token": "tokenforexpo",
  "language": "fr",
  "feeds": [
    {
      "feed_id": "query://cde2ad78-ccd2-42c3-94ab-a93e8e23445b"
    }    
  ],
  "workspaces": {
    "types": [
      {
        "type": "documents"
      }
    ],
    "projects": [      
    ]
  }
}