Deprecated: Return type of Symfony\Component\Validator\Tests\Fixtures\Countable::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/symfony/validator/Tests/Fixtures/Countable.php on line 23