The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/93f6f78a97d503f0a7407952c481c541.gif" -- '\Large
f(x,y,z) \approx L(x,y,z) = f(a,b,c)+f_{x}(a,b,c)(x-a)+f_{y}(a,b,c)(y-b)+f_z(a,b,c)(z-c).
'
returned status = 126
Image not found!
Please try the debugging script