chore: fix typo on user repo

Author: smarcet

app/Repositories/DoctrineUserRepository.php

@@ -128,11 +128,16 @@ public function getByVerificationEmailToken(string $token): ?User
         ]);
     }
 
-    public function getByIdWithGroups(int $id): ?User {
-        return $this->_em->createQuery(
-            'SELECT u, g FROM ' .User::class . ' u
-         LEFT JOIN FETCH u.groups g
-         WHERE u.id = :id'
-        )->setParameter('id', $id)->getOneOrNullResult();
+    public function getByIdWithGroups(int $id): ?User
+    {
+        $dql = 'SELECT DISTINCT u
+            FROM ' . User::class . ' u
+            LEFT JOIN FETCH u.groups g
+            WHERE u.id = :id';
+
+        return $this->getEntityManager()
+            ->createQuery($dql)
+            ->setParameter('id', $id)
+            ->getOneOrNullResult();
     }
 }