The shell command
"/lrn-mdl-prod/build/71384/filter/tex/mimetex.linux" -e "/lrn-mdl-prod/moodledata/filter/tex/7a6f5ce04ac79569bb9afc5a1fa88ccf.gif" -- '\Large \text{tr}\{\mathcal{E}(\rho)\}=1=\text{tr}(\rho)'
returned status = 1
Image not found!
Please try the debugging script