Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-18T14:10:40","request-id":"a5fef6bc-087e-4457-a7e6-2471cc71b910","client-request-id":"a5fef6bc-087e-4457-a7e6-2471cc71b910"}}}"