TypeError: Argument 1 passed to Facebook\WebDriver\Remote\DesiredCapabilities::__construct() must be of the type array

any solution for following errors.?

There was 1 error:

1) Tests\Browser\ExampleTest::testBasicExample TypeError: Argument 1 passed to Facebook\WebDriver\Remote\DesiredCapabilities::__construct() must be of the type array, null given, called in /var/www/html/laravel/vendor/facebook/webdriver/lib/Remote/RemoteWebDriver.php on line 127 /var/www/html/laravel/vendor/facebook/webdriver/lib/Remote/DesiredCapabilities.php:33 /var/www/html/laravel/vendor/facebook/webdriver/lib/Remote/RemoteWebDriver.php:127 /var/www/html/laravel/tests/DuskTestCase.php:39 /var/www/html/laravel/vendor/laravel/dusk/src/Concerns/ProvidesBrowser.php:185 /var/www/html/laravel/vendor/laravel/framework/src/Illuminate/Support/helpers.php:765 /var/www/html/laravel/vendor/laravel/dusk/src/Concerns/ProvidesBrowser.php:186 /var/www/html/laravel/vendor/laravel/dusk/src/Concerns/ProvidesBrowser.php:92 /var/www/html/laravel/vendor/laravel/dusk/src/Concerns/ProvidesBrowser.php:64 /var/www/html/laravel/tests/Browser/ExampleTest.php:30