[09-Sep-2025 23:24:05 UTC] [WHMCS Application] ERROR: Error: Invalid callback PHPMailer\PHPMailer\SMTP::errorHandler, cannot access protected method PHPMailer\PHPMailer\SMTP::errorHandler() in /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php:7791 Stack trace: #0 /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php(7791): unlink() #1 [internal function]: TCPDF->_destroy() #2 {main} {"exception":"[object] (Error(code: 0): Invalid callback PHPMailer\\PHPMailer\\SMTP::errorHandler, cannot access protected method PHPMailer\\PHPMailer\\SMTP::errorHandler() at /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php:7791)"} []
[15-Oct-2025 13:56:50 UTC] [WHMCS Application] ERROR: Error: Invalid callback PHPMailer\PHPMailer\SMTP::errorHandler, cannot access protected method PHPMailer\PHPMailer\SMTP::errorHandler() in /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php:7791 Stack trace: #0 /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php(7791): unlink() #1 [internal function]: TCPDF->_destroy() #2 {main} {"exception":"[object] (Error(code: 0): Invalid callback PHPMailer\\PHPMailer\\SMTP::errorHandler, cannot access protected method PHPMailer\\PHPMailer\\SMTP::errorHandler() at /home/st/public_html/portal/vendor/tecnickcom/tcpdf/tcpdf.php:7791)"} []
