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/d11ae3b37af5f267c810cd9b307cb6c3.gif" -- '\Large 4 \in\mathbb{Z}'
returned status = 126
Image not found!
Please try the debugging script