Unable to open a browser when call is accepted [closed]

I am triggering a call from postman to mobile phone using twilio. I am able to call successfully. It rings on my phone. When I click accept, a message is prompted on the call. When I press 1, it says something error and does not redirect or open a website link.

How should I open a browser and display the url as passed?

 <?php

 namespace AppHttpControllers;

 use IlluminateHttpRequest;
 use TwilioRestClient;

class TwilioController extends Controller
{
public function makeCall(Request $request)
{
    $sid    = env('TWILIO_ACCOUNT_SID');
    $token  = env('TWILIO_AUTH_TOKEN');
    $twilio = new Client($sid, $token);

    $call = $twilio->calls->create(
        $request->input('to'), // User's phone number in E.164 format
        env('TWILIO_PHONE_NUMBER'), // Your Twilio number
        [
            'url' => 'http://testing.domain.tech/twilio/voice-prompt'
        ]
    );

    return response()->json(['status' => 'Call initiated', 'sid' => $call->sid]);
}

public function voicePrompt()
{
    $response = new TwilioTwiMLVoiceResponse();

    $gather = $response->gather([
        'numDigits' => 1,
        'action' => url('/twilio/handle-key-press'),
        'method' => 'POST'
    ]);
    $gather->say('Press 1 to receive a link via SMS.');

    // If no input, Twilio will call this after gather timeout
    $response->say('No input received. Goodbye!');
    
    return response($response)->header('Content-Type', 'text/xml');
}


public function handleKeyPress(Request $request)
{
    $digits = $request->input('Digits');
    $from = $request->input('From');
    $response = new TwilioTwiMLVoiceResponse();

    if ($digits == '1') {
        try {
            $sid    = env('TWILIO_ACCOUNT_SID');
            $token  = env('TWILIO_AUTH_TOKEN');
            $twilio = new Client($sid, $token);

            $twilio->messages->create(
                $from,
                [
                    'from' => env('TWILIO_PHONE_NUMBER'),
                    'body' => 'Here is your link: ' . url('/')
                ]
            );
            $response->say('A link has been sent to your phone via SMS. Thank you!');
        } catch (Exception $e) {
            Log::error('Twilio SMS error: ' . $e->getMessage());
            $response->say('Sorry, there was an error. Please try again later.');
        }
    } else {
        $response->say('Invalid option. Goodbye!');
    }

    return response($response)->header('Content-Type', 'text/xml');
 }
}

// web.php

Route::post('/twilio/voice-prompt', [TwilioController::class, 'voicePrompt'])->name('twilio.voicePrompt');
Route::post('/twilio/handle-key-press', [TwilioController::class, 'handleKeyPress'])->name('twilio.handleKeyPress');

// api.php

Route::post('/twilio/make-call', [TwilioController::class, 'makeCall']);