Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\tests\Drupal\Tests\Core\Theme\Icon\IconTest.php on line 3

Parse error: syntax error, unexpected 'ContainerBuilder' (T_STRING), expecting variable (T_VARIABLE) in C:\Apache24\htdocs\drupal\core\tests\Drupal\Tests\Core\Theme\Icon\IconTest.php on line 28