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Warning: Cannot modify header information - headers already sent by (output started at /home/portal/public_html/library/cryptography.php:21) in /home/portal/public_html/library/functions.php on line 12

Fatal error: Uncaught Mpdf\MpdfException: Data has already been sent to output (/home/portal/public_html/library/cryptography.php at line 21), unable to output PDF file in /home/portal/public_html/include/vendors/mpdf/vendor/mpdf/mpdf/src/Mpdf.php:9549 Stack trace: #0 /home/portal/public_html/pages/printDocument.php(424): Mpdf\Mpdf->Output('Stock Order SOR...', 'I') #1 {main} thrown in /home/portal/public_html/include/vendors/mpdf/vendor/mpdf/mpdf/src/Mpdf.php on line 9549