Sending message using a Facebook driver instance

[dimar7]

• BotMan Version: 2.8.1
• PHP Version:7.4.12
• Messaging Service(s):
• Cache Driver:

Description:

I'm attempting to utilize the Facebook driver instance to send a message to a Facebook user, but it's not functioning as expected. I'm receiving the error message 'Failed to retrieve Facebook driver or driver is not an instance of FacebookDriver.' My intention is to send the message when I make a request to 'https://myserver/api/send-message' using Postman. When I do get_class($facebookDriver) it throws: BotMan\BotMan\Drivers\NullDriver"

namespace App\Http\Controllers;

use BotMan\BotMan\BotMan;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use BotMan\Drivers\Facebook\FacebookDriver;

public function sendMessage()
    {
        try {
            $botman = app('botman');
            $facebookDriver = $botman->getDriver(\BotMan\Drivers\Facebook\FacebookDriver::class);
    
            if ($facebookDriver && $facebookDriver instanceof FacebookDriver) {
                $recipient = '1**';
                $message = 'hello world';
    
                $payload = [
                    'messaging_type' => 'RESPONSE',
                    'recipient' => [
                        'id' => $recipient
                    ],
                    'message' => [
                        'text' => $message
                    ]
                ];
    
                $facebookDriver->sendPayload($payload);
                Log::info('Payload sent successfully to recipient: ' . $recipient);
                
                return response()->json(['status' => 'success']);
            } else {
                Log::error('Failed to retrieve Facebook driver or driver is not an instance of FacebookDriver.');
                return response()->json(['status' => 'error', 'message' => 'Failed to retrieve Facebook driver.'], 500);
            }
        } catch (\Exception $e) {
            Log::error('Error sending payload: ' . $e->getMessage());
            return response()->json(['status' => 'error', 'message' => $e->getMessage()], 500);
    }
}

api.php:

Route::post('/send-message', [BotManController::class, 'sendMessage']);

Steps To Reproduce: