PDF not showing OJS 3.1.2

Hi all

Recently I have problems to display the PDF how it see in the below image


I hope somebody can help me to fix this error.

Hi @christian_criollo,

Were there any recent changes in your journal that may have caused this error? As well, could you provide some additional context to your issue? Details such as what links (PDF preview, published content PDF link) would be helpful. It might also be worth looking at your error log as well.

Kind Regards,
Patricia M.
Public Knowledge Project Team

Hi pmangahis

the only strange thing is that the value of the variable allow_url_open in the php:ini was change to off and the link is published content PDF link

Hi all

I find this error in the debug navigator

Load denied by X-Frame-Options: https://revistas.uao.edu.co/ojs/plugins/generic/pdfJsViewer/…o%2Fojs%2Findex.php%2FREYA%2Farticle%2Fdownload%2F52%2F46%2F does not permit framing.

somebody can help me