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Fatal error: Uncaught Mpdf\MpdfException: Data has already been sent to output, unable to output PDF file in /home3/develop1/public_html/utsavnow.com/mpdf/src/Mpdf.php:9568 Stack trace: #0 /home3/develop1/public_html/utsavnow.com/downloadPDF.php(23): Mpdf\Mpdf->Output('1732191673Al-Zo...', 'D') #1 /home3/develop1/public_html/utsavnow.com/downloadPDF.php(64): pdfFilesDownloads(Array, '1732191673Al-Zo...', '/home3/develop1...') #2 {main} thrown in /home3/develop1/public_html/utsavnow.com/mpdf/src/Mpdf.php on line 9568