Fatal error: Uncaught Error: Class "WPMailSMTP\MigrationAbstract" not found in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/src/Migration.php:17 Stack trace: #0 {main} thrown in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/src/Migration.php on line 17