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/0cc175b9c0f1b6a831c399e269772661.gif" -- '\Large a'
returned status = 126
Image not found!
Please try the debugging script