Error in Listing my YouTube playlists - swift

Question

I got my user access token via Google signin iOS sdk.
Then I use the following source code to get my playlists in YouTube:
func listMyPlaylists(completionHandler: #escaping (_ result: Any?, _ error: Error?) -> ())
{
let url = URL(string: "https://www.googleapis.com/youtube/v3/playlists")!
let parameters: Parameters = ["part": "id","mine": "true"]
let headers: HTTPHeaders = ["Authorization": "Bearer " + accessToken, "Content-Type": "application/json"]
Alamofire.request(url, method: .get, parameters: parameters, encoding: URLEncoding.default, headers: headers).responseJSON { json in
if let error = json.result.error
{
completionHandler(nil, error)
}
else
{
completionHandler(json.result.value, nil)
}
}
}
However, I got the following error. What do I miss?
{
error = {
code = 403;
errors = (
{
domain = global;
message = "Insufficient Permission";
reason = insufficientPermissions;
}
);
message = "Insufficient Permission";
};
}

Answer 1

This usually happens when you didn't include the scope of your authorization as stated in Youtube API Common request errors
forbidden (403) - insufficientPermissions The OAuth 2.0 token provided
for the request specifies scopes that are insufficient for accessing
the requested data.
One of the Youtube scopes you can use is
https://www.googleapis.com/auth/youtube.force-ssl

Answer 2

I agree with #noogui answer and here I want to explain how you can achieve this
- Check your scope you set and if it is kGTLRAuthScopeYouTubeReadonly then change it to kGTLRAuthScopeYouTubeUpload
private let scopes = [kGTLRAuthScopeYouTubeUpload]
And set this in to the viewDidLoad
GIDSignIn.sharedInstance().scopes = scopes
Here is the list of scopes you can check
kGTLRAuthScopeYouTube
kGTLRAuthScopeYouTubeForceSsl
kGTLRAuthScopeYouTubeUpload
kGTLRAuthScopeYouTubeReadonly
kGTLRAuthScopeYouTubeYoutubepartner
kGTLRAuthScopeYouTubeYoutubepartnerChannelAudit