I'm using version LTS 12.3 with PHP Version 5.4.36-0+deb7u3 and nginx,
memory_limit =256M, max_execution_time=150
My uploaded images are not shown on a wikipage using img fileId="13" thumb="y" rel="boxg" (only a broken image icon is displayed and by by clicking on it the message "This image failed to load" appears.
When I use /tiki-download_file.php?fileId=13 the image is correctly downloaded.
Any suggestions how to fix this?