Fatal error: Uncaught Exception: Could not create PDF: Failed without error message: /usr/bin/xvfb-run -a --server-args="-screen 0, 1024x768x24" wkhtmltopdf --page-size 'A4' --encoding 'UTF-8' --user-style-sheet 'css/pdf.css' --margin-top '3' --margin-right '0' --margin-bottom '0' --margin-left '0' '/tmp/tmp_wkhtmlto_pdf_ijDhEM.html' '/tmp/tmp_wkhtmlto_pdf_ND53Aa.pdf' (Exit code: 1) in /home/lespalmiersuser/www/page_fiche_pdf.php:968 Stack trace: #0 {main} thrown in /home/lespalmiersuser/www/page_fiche_pdf.php on line 968