Fatal error: Uncaught Error: Class 'Drupal\Tests\UnitTestCase' not found in /var/www/html/tmp/contrib/simple_oauth/tests/src/Unit/Authentication/Provider/SimpleOauthAuthenticationTest.php:17 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/simple_oauth/tests/src/Unit/Authentication/Provider/SimpleOauthAuthenticationTest.php on line 17