Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-18T09:34:27","request-id":"a2bb1145-258d-4802-9b2c-fa0aaca39c44","client-request-id":"a2bb1145-258d-4802-9b2c-fa0aaca39c44"}}}"