Here at TU Delft with about 10 journals we work on the upgrade of OJS 3.0.2 using the command line (php tools/upgrade.php upgrade) to OJS 3.1.2-4
We encounter a PHP Fatal error:
PHP Fatal error: require_once(): Failed opening required
· '/data/ojs-3.0.2/classes/submission/SubmissionDAO.inc.php'
· (include_path='
· .:/data/ojs-3.0.2/classes:
· /data/ojs-3.0.2/pages:
· /data/ojs-3.0.2/lib/pkp:
· /data/ojs-3.0.2/lib/pkp/classes:
· /data/ojs-3.0.2/lib/pkp/pages:
· /data/ojs-3.0.2/lib/pkp/lib/adodb:
· .:/opt/rh/rh-php72/root/usr/share/pear:
· /opt/rh/rh-php72/root/usr/share/php')
in /data/ojs-3.0.2/lib/pkp/includes/functions.inc.php on line 25
All the files mentioned above are in the file tree. Any ideas what is causing this problem?