Chamilo 1.11.28 Big PDF files are not generated

[NicoDucou]

In Chamilo 1.11.28 when trying to generate a big PDF it generates an error 500 and a blank page.

[NicoDucou]

In the web server error log we can see that the error comes from vendor/mpdf/mpdf/src/Mpdf.php PHP Fatal error: Uncaught Mpdf\\MpdfException: The HTML code size is larger than pcre.backtrack_limit 1000000. You should use WriteHTML() with smaller string lengths. Pass your HTML in smaller chunks. in /.../vendor/mpdf/mpdf/src/Mpdf.php

The solution is to adapt the php configuration for the setting pcre.backtrack_limit

• In the vhost configuration with this line : php_value pcre.backtrack_limit 10000000
• In the php.ini configuration with this line : pcre.backtrack_limit=10000000