Error Upgrade 2.4.8.2 to 3.1.0

[Adriano_Jose]

I found the same situation on this topic.
I’ll try to follow his advice to see if I can fix this.

Upgrade from OJS 2.4.7 to 3.0.1 fails

Hi @asmecher, I got the same error while upgrading from 2.4.6 to 3.0.1: PHP Warning: assert(): Assertion failed in /var/www/www.jld.edu.au/versions/3.0.1/lib/pkp/classes/submission/PKPSubmissionFileDAO.inc.php on line 380 <h1>There are no readable files in this directory tree. Are safe mode or open_basedir active?</h1>ojs2: There are no readable files in this directory tree. Are safe mode or open_basedir active? Is there a solution found for this yet? I can send you the sql dump of our db b…

Regards,
Adriano Moreno