Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-26T19:29:53","request-id":"f13397b9-fc36-43ad-907e-20f4e655d8aa","client-request-id":"f13397b9-fc36-43ad-907e-20f4e655d8aa"}}}"