Dear Ladies and Gentlemen,
On a relative fresh installation we got problems printing a ticket, FAQ or anything else.
Following error is thrown on the apache logs (resulting a HTTP 500 error page):
[Mon Jun 07 15:02:55.824305 2021] [php7:error] [pid 141192] [client 172.16.8.17:52299] PHP Fatal error: Uncaught Error: Call to undefined function Mpdf\\gzcompress() in /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php:10445\nStack trace:\n#0 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php(25262): Mpdf\\Mpdf->_putfonts()\n#1 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php(11425): Mpdf\\Mpdf->_putresources()\n#2 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php(2005): Mpdf\\Mpdf->_enddoc()\n#3 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php(9258): Mpdf\\Mpdf->Close()\n#4 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/class.pdf.php(54): Mpdf\\Mpdf->Output()\n#5 /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/class.faq.php(171): mPDFWithLocalImages->output()\n#6 /srv/www/vhosts/helpdesk.stahlschmidt.loc/scp/faq.php(156): FAQ->printPdf()\n#7 {main}\n thrown in /srv/www/vhosts/helpdesk.stahlschmidt.loc/include/mpdf/vendor/mpdf/mpdf/src/Mpdf.php on line 10445, referer: https://helpdesk.stahlschmidt.loc/scp/faq.php?id=5
Maybe someone is able to help us?