d1bec7aa-ff77-4190-94a8-ef451e65511a cannot be removed because it is still being referenced
javax.jcr.ReferentialIntegrityException: d1bec7aa-ff77-4190-94a8-ef451e65511a cannot be removed because it is still being referenced 
    at org.apache.jackrabbit.core.state.SharedItemStateManager$Update.checkReferentialIntegrity(SharedItemStateManager.java:1118) 
    at org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:598) 
    at org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1507) 
    at org.apache.jackrabbit.core.state.SharedItemStateManager.update(SharedItemStateManager.java:1537) 
    at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:400) 
    at org.apache.jackrabbit.core.state.XAItemStateManager.update(XAItemStateManager.java:354) 
    at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:375) 
    at org.apache.jackrabbit.core.state.SessionItemStateManager.update(SessionItemStateManager.java:275) 
    at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:258) 
    at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216) 
    at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91) 
    at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:329) 
    at org.apache.jackrabbit.core.session.SessionSaveOperation.perform(SessionSaveOperation.java:65) 
    at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)