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

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?