Warning: Undefined variable $html in /home/server159773/ftp/bip/pdf.php on line 38

Fatal error: Uncaught Mpdf\MpdfException: Data has already been sent to output (/home/server159773/ftp/bip/pdf.php at line 38), unable to output PDF file in /home/server159773/ftp/mpdf/mpdf/mpdf/src/Mpdf.php:9568 Stack trace: #0 /home/server159773/ftp/bip/pdf.php(81): Mpdf\Mpdf->Output('redakcja-bip.pd...', 'I') #1 /home/server159773/ftp/bip/index.php(122): include_once('/home/server159...') #2 {main} thrown in /home/server159773/ftp/mpdf/mpdf/mpdf/src/Mpdf.php on line 9568