null $request in PendingRequest

[simioluwatomi]

• Laravel Version: 8.5.6
• PHP Version: 7.4
• Database Driver & Version: MySQL 8

Description:

I have a HTTP Client that extends the PendingRequest class. The HTTP Client is registered as a singleton using a ServiceProvider

Steps To Reproduce:

    public function register()
    {
        $stack = HandlerStack::create(new CurlHandler());
        $stack->push(new ServiceXYZAuthenticationHandler());

        $this->app->singleton(CustomHttpClient::class, function () use ($stack) {
            $client = new CustomHttpClient();
            $client->acceptJson()
                ->baseUrl(config('services.serviceXYZ.base_url'))
                ->withOptions([
                    'handler' => $stack
                ]);

            return $client;
        });
    }

In the CustomHttpClient class, I have different methods that makes an API request. One of them is shown below

    public function doSomething(array $data)
    {
        return $this->post('accounts/validate', [
            'field_a' => $data['field_a'],
            'field_b'      => $data['field_b'],
        ]);
    }

But each time an API request is made using any of the methods of CustomHTTPClient, the ResponseReceived event that is supposed to be triggered in the dispatchResponseReceivedEvent method of PendingRequest is never triggered because protected $request; property of PendingRequest is always null even though a request has been sent and a response has been received.