Fatal error: Uncaught Error: Class 'WPMailSMTP\Admin\PageAbstract' not found in E:\www\web\wp-content\plugins\wp-mail-smtp\src\Admin\Pages\AlertsTab.php:13
Stack trace:
#0 {main}
thrown in E:\www\web\wp-content\plugins\wp-mail-smtp\src\Admin\Pages\AlertsTab.php on line 13