Users must not proceed or be redirected to the next section until they upload a file here

Hello There,
I am using OJS,
I require that users cannot proceed further with their submission, or in other words, the “save and continue” button will remain inactive until a file has been uploaded. I understand that this functionality is available in OJS 3.4 version, however, I need it in OJS version as 3.4 does not offer Long Term Support. Assistance in implementing this feature would be greatly appreciated.
Thank you.

Hi @Ayush_Mandal,

It is very unlikely that this will be backported to OJS 3.3. Rather, it would likely be included in OJS 3.5 (which will be built based on 3.4 and due out at the end of the year, and it will be an LTS).

PKP Team