auth error

[meghdadkh]

Hello
While working with the stream_feed package, I get the error {"detail":"Missing auth header.","status_code":403,"code":17,"exception":"NotAllowedException","duration":"0.00ms"," I get more_info":"https://getstream.io/docs/api_error_responses"} and while I have both received the token and authenticated the user, I want to know how to solve my problem.

var client = StreamFeedClient(
apiKey
);
await client.setUser(
User(id),
Token(token),
);

but when use addActivity i get error