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/aeb1a189d1143dd1d5dd746143da1cc2.gif" -- '\Large   3x^{5}+ x^{3} - x^{99} '
returned status = 126
Image not found!
Please try the debugging script