This error appears with some FDF functions used:
Fatal error: Uncaught Error: Call to undefined function fdf_create() in /opt/lampp/htdocs/jservices/servs/fmcsa_poblarformulario.php:2 Stack trace: #0 /opt/lampp/htdocs/jservices/servs/fmcsa_usdot.php(31): include_once() #1 /opt/lampp/htdocs/jservices/main.php(114): include('/opt/lampp/htdo...') #2 {main} thrown in /opt/lampp/htdocs/jservices/servs/fmcsa_poblarformulario.php on line 2
Any ideas on how to install, enable or configure?