[OJS 3.1.2] PKP PN Plugin error - Failed Ajax request or invalid JSON returned [close]

Hi @diegomejia07,

The problem you’re encountering is different than the one @KarwanJacksi is encountering (with the missing class file). In OJS 3.1.2 that file shouldn’t exist (and the plugin doesn’t try to use it).

Thanks for confirming that the Archive_Tar module is enabled and working.

Next, I’d suggest trying to capture and check the server’s JSON that it sends to your browser, which seems not to be parseable. See these instructions: OJS 3.2.1-1 error: Failed Ajax request or invalid JSON returned - #19 by asmecher

Regards,
Alec Smecher
Public Knowledge Project Team