Getting error with GuzzleHttp getting Channel

[ChrisYatesUK]

Only just installed composer and started using this so may be something stupid that I'm doing wrong..
$bountyecon is the channel ID
When trying to call $discord->channel->getChannel($bountyecon);
I'm getting :
Fatal error: Uncaught TypeError: Argument 2 passed to GuzzleHttp\Command\Guzzle\GuzzleClient::getCommand()

[thorerik]

Can you provide a minimal example that shows the issue, you have provided no context past the single function call, which works for me.

[ChrisYatesUK]

After getting the token following oauth2 login I'm using
$token = $_SESSION['access_token'];
$discord = new DiscordClient(['token' => '$token','tokenType' => 'OAuth']);
var_dump($discord->channel->getChannelMessages(['channel.id' => 924525362489221180]));

Not had issues with APIs before but always had an issue using api's with oauth so I know I'm being stupid somewhere