Hi dear community, I hope you can help me solving a problem with my OJS platform, in browser console I got this message:
When I got message, I accessed in log server and I found this message
So I review on SubmissionFilesCategoryGridDataProvider.inc.php file and I debug the code and I could saw on this section code an error.
The image starts showing the 131 code line where $queryDao var is null, in this line error is thrown.
I’m using this production environment:
Ubuntu 20 Server
OJS 22.214.171.124 (It was upgraded from 126.96.36.199, you can see details in the following image)
psql (PostgreSQL) 14.5
Any hint will be useful for me.