The shell command
"/srv/www/0003_site/releases/4.1.17-6-dev/filter/tex/mimetex.linux" -e "/srv/www/0003_site/media/media_moodle/filter/tex/394772b5b3ed2952d5b5619c94250638.gif" -- '\Large A \cup B '
returned status = 126
Image not found!
Please try the debugging script