The shell command
"/lrn-mdl-prod/build/75217/filter/tex/mimetex.linux" -e "/lrn-mdl-prod/moodledata/filter/tex/66b51a6538d6e6aa0bd8a3c320f1d37c.gif" -- '\Large x_2,x_3,x_4'
returned status = 1
Image not found!
Please try the debugging script