diff --git a/src/Controller/APIController.php b/src/Controller/APIController.php
index 8ee33c0a..197021c5 100644
--- a/src/Controller/APIController.php
+++ b/src/Controller/APIController.php
@@ -2191,7 +2191,8 @@ class APIController extends Controller
 
     protected function findCustomerByNumber($number)
     {
-        $customers = $this->em->getRepository(Customer::class)->findBy(['phone_mobile' => $number]);
+        $em = $this->getDoctrine()->getManager();
+        $customers = $em->getRepository(Customer::class)->findBy(['phone_mobile' => $number]);
 
         // find the customer with the most number of cars
         $car_count = 0;