"A stream factory is required to create a request"

[Jafo232]

Not sure what I am doing wrong here:

        $builder = new ClientBuilder();

        $client = $builder->createClientV3(config('shortcut.apiKey'));

        $params = ['group_id' => '121265f3-12f-4b0f-b121-129cf11a8'];

        $stories = $client->post('stories/search', $params);

The response I get is:

Cannot create request: A stream factory is required to create a request with a non-empty string body. at /home/vagrant/kpi/vendor/php-http/client-common/src/HttpMethodsClient.php line 135