Here is the failed message convert: not authorized `093_bon1.pdf’ @ error/constitute.c/WriteImage/1028. In a forum, it is imagemagick setting . Here is the source. The solution is just change the /etc/ImageMagick-6/policy.xml Change the line of <policy domain=”coder” rights=”none” pattern=”PDF” />i change the rights to “read|write” Then add another lain <policy domain=”coder” rights=”read|write” pattern=”LABEL” /> That’s it. […]