Caused by: java.lang.NullPointerException
	at org.ametys.core.datasource.ConnectionHelper.getConnection(ConnectionHelper.java:99)
	at org.ametys.plugins.core.impl.userpref.JdbcPlainUserPreferencesStorage.getUnTypedUserPrefs(JdbcPlainUserPreferencesStorage.java:151)
	at org.ametys.web.userpref.FOUsersManagerSiteAwareUserPreferencesStorage.getUnTypedUserPrefs(FOUsersManagerSiteAwareUserPreferencesStorage.java:38)
	at sun.reflect.GeneratedMethodAccessor65.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.ametys.runtime.plugin.component.PluginsComponentManager$ComponentInvocationHandler.invoke(PluginsComponentManager.java:177)
	at com.sun.proxy.$Proxy47.getUnTypedUserPrefs(Unknown Source)
	at org.ametys.core.userpref.UserPreferencesManager.getUnTypedUserPrefs(UserPreferencesManager.java:100)
	at org.ametys.plugins.core.userpref.UserPreferencesGenerator._saxPreferences(UserPreferencesGenerator.java:134)
	at org.ametys.web.userpref.FOUserPreferencesGenerator._saxPreferences(FOUserPreferencesGenerator.java:96)
	at org.ametys.plugins.core.userpref.UserPreferencesGenerator.generate(UserPreferencesGenerator.java:89)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:581)