Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-27T15:07:47","request-id":"868f6177-6502-4fac-9e56-adbd3fa8b660","client-request-id":"868f6177-6502-4fac-9e56-adbd3fa8b660"}}}"