Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-25T12:37:17","request-id":"0a139f0e-6250-433e-abf7-c3896186fe82","client-request-id":"0a139f0e-6250-433e-abf7-c3896186fe82"}}}"