a same join() in filter and aggregator make error if we combine them

src/Bundle/ChillPersonBundle/Export/Export/CountHousehold.php

@@ -107,6 +107,7 @@ class CountHousehold implements ExportInterface, GroupedExportInterface
             ->join('acppart.person', 'person')
             ->join('person.householdParticipations', 'householdmember')
             ->join('householdmember.household', 'household')
+            ->join('household.compositions', 'composition')
         ;
 
         $qb->select('COUNT(DISTINCT householdmember.household) AS export_result');