The shell command
"/lrn-mdl-prod/build/71384/filter/tex/mimetex.linux" -e "/lrn-mdl-prod/moodledata/filter/tex/2b410aabf0c6326f72f6b933b2162dc3.gif" -- '\Large \mathcal{E}(\rho) = \sum_i\mathbf{E}_i \rho \mathbf{E}_i^\dagger, '
returned status = 1
Image not found!
Please try the debugging script