Filtered Streams giving me 403 Forbidden

[gabs247]

I'm just trying to follow the TweetInvi and Twitter API documentation to do something pretty simple with the streams.

When I run the Twitter API via cURL with the BearerToken generated in my Twitter Dev account, it works.

var userClient = new TwitterClient(consumerKey, consumerSecret);
var stream = userClient.Streams.CreateFilteredStream();
stream.AddTrack("@TwitterUsername");
stream.MatchingTweetReceived += (sender, eventReceived) =>
{
    // do stuff
};
await stream.StartMatchingAnyConditionAsync();

When I run this code though, I get:

\n\n\n