We recently upgraded our OJS 220.127.116.11 to the latest release 3.1.2-4. There were no serious issues. We now tried to install the QuickSubmit plugin by putting the files from Github directly into the respective folder. OJS recognized them and shows the plugin in the list of installed plugins. However, when I go to a journal click on import/export data, I get a blank page and the error message
require_once(/var/www/test.ojs.openagrar.de/classes/publication/Publication.inc.php): failed to open stream: No such file or directory
I checked and indeed, there is no such directory in our OJS installation. Is this missing due to an error during upgrade or is the quickSubmit plugin requiring obsolete files and is not suitable for the new OJS version?
I cannot install the plugin via the plugin gallery because the gallery is not working yet (its empty). The plugin was installed and working with our previous OJS 3.1.0-1.