The shell command
"/var/www/moodle/filter/tex/mimetex.linux" -e "/var/www/data/efs/moodledata/filter/tex/7704428e11f7ed5af0efa207a484eb2b.svg" -- '\Large \mathbf{D}\left(\mathrm{f}^{2}(\mathrm{x})\right), \operatorforbiddenkeyword_name{D}\left(\mathrm{f}^{5}(\mathrm{x})\right)'
returned status = 126
Image not found!
Please try the debugging script