Error: Exception: Data has already been sent to output (/data/sites/web/ventobe/subsites/vento.be/httpdocs/site/modules/RockPdf/vendor/mpdf/mpdf/src/Cache.php at line 75), unable to output PDF file (in /data/sites/web/ventobe/subsites/vento.be/httpdocs/site/modules/RockPdf/vendor/mpdf/mpdf/src/Mpdf.php line 9323)
#0 /data/sites/web/ventobe/subsites/vento.be/httpdocs/site/modules/RockPdf/RockPdf.module.php(91): Mpdf\Mpdf->Output('output.pdf', 'I')
#1 /data/sites/web/ventobe/subsites/vento.be/httpdocs/site/init.php(96): ProcessWire\RockPdf->show()
#2 /data/sites/web/ventobe/subsites/vento.be/httpdocs/site/templates/generate_pdf.php(88): renderPDF(Object(ProcessWire\Modules), Array, '\n\t<div id="PDF"...', '/dist/assets/cs...', '/dist/assets/im...')
#3 /data/sites/web/ventobe/subsites/vento.be/httpdocs/wire/core/TemplateFile.php(287): require('/data/sites/web...')
#4 /data/sites/web/ventobe/subsites/vento.be/httpdocs/wire/core/Wire.php(380): ProcessWire\TemplateFile->___render()
#5 /data
This error message was shown because: site is in debug mode. ($config->debug = true; => /site/config.php). Error has been logged.