Laravel 6 cannot run tests "PHPUnit\Runner\BaseTestRunner::getTest() must be of the type string" - phpunit

Question

I'm trying to write very simple phpunit test
php artisan make:test CarTest
class CarTest extends TestCase
{
/**
* A basic feature test example.
*
* #return void
*/
public function testExample()
{
$response = $this->get('/car');
$response->assertStatus(200);
}
}
Now I run it
phpunit ./tests/Feature/CarTest.php
I get
Fatal error: Uncaught TypeError: Argument 2 passed to PHPUnit\Runner\BaseTestRunner::getTest() must be of the type string, array given, called in C:\Users\yasse\AppData\Roaming\Composer\vendor\phpunit\phpunit\src\TextUI\Command.php on line 125 and defined in C:\xampp\htdocs\lara6\vendor\phpunit\phpunit\src\Runner\BaseTestRunner.php:60
Stack trace:
#0 C:\Users\{username}\AppData\Roaming\Composer\vendor\phpunit\phpunit\src\TextUI\Command.php(125): PHPUnit\Runner\BaseTestRunner->getTest('C:\\xampp\\htdocs...', Array)
#1 C:\Users\{username}\AppData\Roaming\Composer\vendor\phpunit\phpunit\src\TextUI\Command.php(101): PHPUnit\TextUI\Command->run(Array, true)
#2 C:\Users\{username}\AppData\Roaming\Composer\vendor\phpunit\phpunit\phpunit(61): PHPUnit\TextUI\Command::main()
#3 {main}
I installed phpunit globally and installed it locally (v8) using composer and run composer dump-autoload but issue is not resolved. How to fix this and be able to run this test?