Rest authentication error : Invalid signature - provided signature does not match

[nmsobri]

$stack = HandlerStack::create();

$middleware = new Oauth1( array(
		'consumer_key' => $user_info['consumer_key'],
		'consumer_secret' => $user_info['consumer_secret'],
		'signature_method' => Oauth1::SIGNATURE_METHOD_HMAC,
		'token' => '', 'token_secret' => ''
	)
);

$stack->push( $middleware );

$client = new Client( array(
		'base_uri' => sprintf( '%s/wp-json/wc/v2/', rtrim( $user_info['site_url'], '/' ) ),
		'handler' => $stack,
		'auth' => 'oauth',
	)
);

$client->post( 'products',
	array(
		'json' => array(
			'name' => $cart_good['goods_name'],
			'type' => 'simple',
			'regular_price' => $cart_good['shop_price'],
			'description' => $cart_good['goods_desc'],
		)
	)
);

Hi there, this library used to work with previous version of woocommerce.
After i update woocommerce to latest version, it completely not working.
I keep getting invalid signature

Wordpress : 4.8
Woocommerce : 3.1.1