Fatal error: Uncaught Error: Interface "Humbug\SelfUpdate\Strategy\StrategyInterface" not found in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/padraic/phar-updater/src/Strategy/GithubStrategy.php:21 Stack trace: #0 {main} thrown in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/padraic/phar-updater/src/Strategy/GithubStrategy.php on line 21