Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\modules\config\tests\config_test\src\ConfigTestInterface.php on line 3

Fatal error: Interface 'Drupal\Core\Config\Entity\ConfigEntityInterface' not found in C:\Apache24\htdocs\drupal\core\modules\config\tests\config_test\src\ConfigTestInterface.php on line 12