Can't create document with MongoDB

nuxeo_1    | Jan 30, 2017 3:45:10 PM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException
nuxeo_1    | SEVERE: Error Rendering View[/view_documents.xhtml]
nuxeo_1    | javax.el.ELException: /widgets/suggest_many_directory_widget_template.xhtml @49,225 value="#{select2Actions.resolveMultipleDirectoryEntries(currentValue, widgetProperty_directoryName, widgetProperty_localize, widgetProperty_keySeparator, widgetProperty_dbl10n, widgetProperty_labelFieldName)}": java.lang.NullPointerException
nuxeo_1    | Caused by: javax.el.ELException: java.lang.NullPointerException
nuxeo_1    | 	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:339)
nuxeo_1    | 	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:280)
nuxeo_1    | 	at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)
nuxeo_1    | 	at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
nuxeo_1    | 	at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
nuxeo_1    | 	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
nuxeo_1    | 	... 160 more
nuxeo_1    | Caused by: java.lang.NullPointerException
nuxeo_1    | 	at org.nuxeo.ecm.platform.ui.select2.Select2ActionsBean.getMultipleDirectoryEntries(Select2ActionsBean.java:329)
nuxeo_1    | 	at org.nuxeo.ecm.platform.ui.select2.Select2ActionsBean.resolveMultipleDirectoryEntries(Select2ActionsBean.java:694)
nuxeo_1    | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)