Invalid refresh token

[DepsCian]

Plan

Premium

Country

UA

Device

PC

Operating System

Windows 11

My Question or Issue

Hello, trying to do an automatic access token refresh, but for some reason when I do, the query returns an error to me: {"error": "invalid_grant", "error_description": "Invalid refresh token"}

My refresh token is 100% correct.

Here is my code to get the access token:

    data = {
    'grant_type': 'refresh_token',
    'refresh_token': refresh_token,
    'client_id': client_id,
    }
    headers = {
        'Authorization': 'Basic ' + base64.urlsafe_b64encode(f'{client_id}:{client_secret}'.encode('ascii')).decode(),
        'Content-Type': 'application/x-www-form-urlencoded'
    }

     response = requests.post(token_url, data=data, headers=headers)

       if response.status_code == 200:
            oauth_token = response.json()['access_token']

[Ximzend]

I recommend you to look again at "Request a refreshed Access Token".

[DepsCian]

I did exactly the same thing, the problem remained.

[DepsCian · Accepted solution]

My solution is:

    encoded = base64.b64encode((client_id + ":" + client_secret).encode("ascii")).decode("ascii")
    data = {
    "grant_type": "client_credentials"
    }
    auth_headers = {
    "Authorization": "Basic " + encoded,
    "Content-Type": "application/x-www-form-urlencoded"
    }