Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\modules\ckeditor5\src\Plugin\Validation\Constraint\FundamentalCompatibilityConstraintValidator.php on line 3

Fatal error: Arrays are not allowed in class constants in C:\Apache24\htdocs\drupal\core\modules\ckeditor5\src\Plugin\Validation\Constraint\FundamentalCompatibilityConstraintValidator.php on line 47