Important dependencies
1 - to download the pdf for courses you need to change the host name of the server
for windowa 1 - to create pdf you need to change the host if you are running it on any server 2- you need to download wkhtmltopdf-
windows user follow the below link: https://wkhtmltopdf.en.softonic.com/
after downloading wkhtmltopdf you need to set its path in environment variable.