OrgType Inducement tab NPE

2018-10-22 15:22:42,133 [] [https-jsse-nio-8443-exec-9] WARN (com.evolveum.midpoint.web.page.error.PageError): Creating error page for code org.apache.wicket.WicketRuntimeException, exception Error attaching this container for rendering: [WebMarkupContainer [Component id = body]]: {}
org.apache.wicket.WicketRuntimeException: Error attaching this container for rendering: [WebMarkupContainer [Component id = body]]
        at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1837)
        at org.apache.wicket.Component.onBeforeRender(Component.java:3916)
....
Caused by: java.lang.NullPointerException: null
        at com.evolveum.midpoint.web.component.assignment.AssignmentsUtil.getName(AssignmentsUtil.java:283)
        at com.evolveum.midpoint.web.component.assignment.AssignmentPanel$3.createLinkModel(AssignmentPanel.java:253)
        at com.evolveum.midpoint.web.component.data.column.LinkColumn.populateItem(LinkColumn.java:59)
        at org.apache.wicket.extensions.markup.html.repeater.data.grid.AbstractDataGridView.populateItem(AbstractDataGridView.java:156)
        at org.apache.wicket.markup.repeater.RefreshingView$1.newItem(RefreshingView.java:114)

    <inducement id="2">
        <targetRef oid="zzz-role-virtuser-manager" relation="org:default" type="c:RoleType">

        </targetRef>
        <orderConstraint id="7">
            <orderMin>1</orderMin>
            <orderMax>unbounded</orderMax>
            <relation>org:manager</relation>
        </orderConstraint>
    </inducement>
    <inducement id="3">
        <focusMappings>
            <mapping id="8">
                <expression>
                    <value>virtual_users</value>
                </expression>
                <target>
                    <c:path>$focus/extension/zzzOrgCategory</c:path>
                </target>
            </mapping>
        </focusMappings>
        <orderConstraint id="9">
            <orderMin>1</orderMin>
            <orderMax>unbounded</orderMax>
            <relation>default</relation>
        </orderConstraint>
        <focusType>OrgType</focusType>
    </inducement>