I have upgrade the OJS 3.1.0 but have problems with PDF files. In PDF viewer file is not viewed
and also using the link I can’t download the file
What OJS version did you use earlier?
Was the upgrade successful i.e. without any warnings/errors?
Best,
Bozana
problem solved, there is problem in the permission folder
thankyou
i upgrade the OJS from 2.4.8 version to 3.1.0