Fatal error: Uncaught Error: Class 'Drupal\TestTools\PhpUnitCompatibility\RunnerVersion' not found in /home/filipfabiszak/public_html/drupal/core/tests/Drupal/Tests/PhpUnitCompatibilityTrait.php:11 Stack trace: #0 {main} thrown in /home/filipfabiszak/public_html/drupal/core/tests/Drupal/Tests/PhpUnitCompatibilityTrait.php on line 11