The shell command
"/home/hocmai/cgi-bin/mimetex.linux" -e "/home/hocmai/moodledata/filter/tex/06b3a28bbed8ad0265d16134f4676ed9.gif" -- '\Large z = r\left( {\cos \varphi + i\sin \varphi } \right)'
returned status = 126
Image not found!
Please try the debugging script