PKP PN Deposit Error in OJS 3.3

Describe the issue or problem
I have installed the PKP plugin on OJS (Open Journal Systems) version 3.3 with PHP 7.3. However, when trying to deposit to the server, I encounter an error message:
"Could not convert selected objects."
I have tried resubmitting multiple times over several days but still haven’t found an effective solution.

Steps I took leading up to the issue

  1. Logged into the OJS dashboard.
  2. Installed the PKP plugin.
  3. Filled in the required information for the deposit.
  4. Clicked submit to process the deposit.
  5. The error message appears: "Could not convert selected objects."

What application are you using?
OJS version 3.3.0-4 with PHP 7.3.

Additional information

  • I have attempted various solutions, including clearing the cache and updating the plugin, but the error persists.
  • Here is the error log (if available, include it here):

Please provide assistance or suggestions on how to resolve this issue. Thank you!

Hi!

Please, get your installation upgraded to the latest OJS 3.3.0 available (currently 3.3.0-19), that might possibly fix the issue you’re having, also, ensure you’re using the latest version of the PN plugin.

Best,
Jonas Raoni