Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-17T22:58:13","request-id":"b24bd8be-f8d7-43ee-ac64-69cc38303196","client-request-id":"b24bd8be-f8d7-43ee-ac64-69cc38303196"}}}"