Fatal error: Uncaught Error: Class 'Tx\Mailer\Exceptions\SMTPException' not found in C:\xampp\htdocs\hou\vendor\txthinking\mailer\src\Mailer\Exceptions\CodeException.php:29 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hou\vendor\txthinking\mailer\src\Mailer\Exceptions\CodeException.php on line 29