The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/545bceb5ee0dff38bdb17223f41c5c8b.gif" -- '\Large D_{\mathbf{u}}f(0,1)=\frac{1}{\sqrt{5}}(\mathbf{i} +2\mathbf{j})\cdot (2\mathbf{i} + 4\mathbf{j}) = \frac{2+8}{\sqrt{5}}=2\sqrt{5}. '
returned status = 126
Image not found!
Please try the debugging script