[Frontoffice] Bug code reduction

ShopBundle/Repository/ReductionCartRepository.php

@@ -29,11 +29,11 @@ class ReductionCartRepository extends BaseRepository implements DefaultRepositor
                 return ReductionCartInterface::class;
         }
 
-        public function findOneByCode($code)
+        public function findByCode($code)
         {
                 $query = $this->findByMerchantQuery() ;
                 $query->andWhere('e.codes LIKE :code')->setParameter('code', '%'.$code.'%') ;
-                return $query->getQuery()->getOneOrNullResult() ;
+                return $query->getQuery()->getResult() ;
         }
 
         public function getValuesOfFieldType(){