I am trying to convert pdf to html in php using mgufrone library(https://github.com/mgufrone/pdf-to-html). I run this in my mac it's working alright. But when I run in centos server, the .html file is created blank inside /vendor/gufy/pdftohtml-pdf/output folder. In my mac local multiples files are created inside /output folder. But in server only a single file is created with empty content. Please help.