Failed to get the sites followed by user from Microsoft Graph-CodePudding

I am trying to retrieve the sites that the user is following from Microsoft Graph Explorer.

I found this document to do that:

If you're accessing the Graph API from any other interface (e.g. code), you'll need to manually form the request headers and include the token that you've obtained.

How to obtain a token for a service application would require further information, you can read more from the official documentation

Here is a simple example using Python and MSAL, as well as the constructed request header.

app = msal.ConfidentialClientApplication(
    client_id         = client_id,
    client_credential = client_secret,
    authority         = f"https://login.microsoftonline.com/{tenant_id}")

scopes = ["https://graph.microsoft.com/.default"]

token = None
token = app.acquire_token_for_client(scopes = scopes)

req_headers = {
    "Authorization": "Bearer "   token['access_token']
    }