This call has not been granted

i create application_key, application_secret and consumer_key followin this blog https://docs.ovh.com/gb/en/customer/first-steps-with-ovh-api/ .
but when i run my code i got error :
> ovh.exceptions.NotGrantedCall: This call has not been granted

**Note: when i chose Validity for 5 min it work but when i chose {} i got error**

my code

> application_key = getenv("application_key")
> application_secret = getenv("application_secret")
> consumer_key = getenv("consumer_key")
> client = ovh.Client(
> endpoint='ovh-eu',
> application_key=application_key,
> application_secret=application_secret,
> consumer_key=consumer_key,
> )
> result = client.get("/me")
> print(json.dumps(result, indent=4))