Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-31T19:36:52","request-id":"56edd0d2-91d2-4929-959e-5b26765b1963","client-request-id":"56edd0d2-91d2-4929-959e-5b26765b1963"}}}"