TypeError thrown

Argument 1 passed to GuzzleHttp\Client::send() must be an instance of GuzzleHttp\Message\RequestInterface, instance of GuzzleHttp\Psr7\Request given, called in /home/customer/www/rootmountain.com/public_html/wp-content/plugins/easyazon/vendor/thewirecutter/paapi5-php-sdk/src/com/amazon/paapi5/v1/api/DefaultApi.php on line 416