Warning: require_once(PHPUnit/Extensions/OutputTestCase.php): Failed to open stream: No such file or directory in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/phpdocumentor/fileset/tests/common/bootstrap.php on line 13

Fatal error: Uncaught Error: Failed opening required 'PHPUnit/Extensions/OutputTestCase.php' (include_path='.:/usr/local/lib/php') in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/phpdocumentor/fileset/tests/common/bootstrap.php:13 Stack trace: #0 {main} thrown in /var/www/html/phpkobo/research/php-downloaded-apps/phpmailer-5-2-16/PHPMailer-5.2.16/vendor/phpdocumentor/fileset/tests/common/bootstrap.php on line 13