Laravel Dusk x Laradock: Failed to connect to localhost port 9515: Connection refused

Hello guys, I use Laradock in my development environment. Laradock runs on top of WSL, and I'm trying to use Laravel Dusk. I installed it, but when I run "artisan dusk", I get the error message "Failed to connect to localhost port 9515: Connection refused."

I've read some things on the forum, but they're not very recent, so I'm not sure if they apply to my case. In other words, it seems like Chrome has not been installed, and that's why this error appears.

My Linux knowledge is quite limited, so could someone here please guide me on how to fix this error? Thank you very much.

My Dusktestcase.php

namespace Tests;

use Illuminate\Support\Collection;
use Facebook\WebDriver\Chrome\ChromeOptions;
use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\Remote\RemoteWebDriver;
use Laravel\Dusk\TestCase as BaseTestCase;

abstract class DuskTestCase extends BaseTestCase
{
    use CreatesApplication;

    /**
     * Prepare for Dusk test execution.
     *
     * @beforeClass
     */
    public static function prepare(): void
    {
        if (! static::runningInSail()) {
            static::startChromeDriver();
        }
    }

    /**
     * Create the RemoteWebDriver instance.
     */
    protected function driver(): RemoteWebDriver
    {
        $options = (new ChromeOptions)->addArguments(collect([
            $this->shouldStartMaximized() ? '--start-maximized' : '--window-size=1920,1080',
        ])->unless($this->hasHeadlessDisabled(), function (Collection $items) {
            return $items->merge([
                '--disable-gpu',
                '--headless=new',
            ]);
        })->all());

        return RemoteWebDriver::create(
            $_ENV['DUSK_DRIVER_URL'] ?? 'http://localhost:9515',
            DesiredCapabilities::chrome()->setCapability(
                ChromeOptions::CAPABILITY, $options
            )
        );
    }

    /**
     * Determine whether the Dusk command has disabled headless mode.
     */
    protected function hasHeadlessDisabled(): bool
    {
        return isset($_SERVER['DUSK_HEADLESS_DISABLED']) ||
               isset($_ENV['DUSK_HEADLESS_DISABLED']);
    }

    /**
     * Determine if the browser window should start maximized.
     */
    protected function shouldStartMaximized(): bool
    {
        return isset($_SERVER['DUSK_START_MAXIMIZED']) ||
               isset($_ENV['DUSK_START_MAXIMIZED']);
    }
}