fix: assign newly created teamer entities to user

src/BusProNet/UserDataHandler.php

@@ -108,6 +108,7 @@ class UserDataHandler
             $communication = Communication::fromApiResponse($profileResponse);
             if (null === $user->getTeamer()) {
                 $teamer = Teamer::fromApiResponse($profileResponse);
+                $user->setTeamer($teamer);
                 $this->entityManager->persist($teamer);
             } else {
                 $teamer = $user->getTeamer();