Dear all, I'm running Koha 16.11 on debian 3.16 and every time I attempt uploading a .zip file with cover images and datalink.txt I get an error 500. An error has occurred!*Error 500*This message may have been caused by any of the following reasons: - You made use of an external link to an item that is no longer available - You followed an outdated link e.g. from a search engine or a bookmark - You tried to access a page that needs authentication - An internal link in the client is broken and the page does not exist What's next? - Use top menu bar to navigate to another part of Koha. - To report a broken link or any other issue, please contact the Koha Administrator I've checked out Bug 20564 <https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=20564> and this thread <http://koha.1045719.n5.nabble.com/Bulk-Patron-Image-upload-zip-file-giving-Error-500-td5940031.html>. When I check my intranet error logs, I even get the same but still, I don't understand how to fix this. I've also tried it on Koha 18.05 with the same outcome. Can anybody help me? Thank you all in advance. -- Maite Arakaki