convert:not authorized `aaaa` @ error/constitute.c/ReadImage/453

Question

I want to create a captcha pic by use convert from ImageMagick.

And I follow this, but there are some problem .

Input In my linux shell:

Answer 1

If someone need to do it with one command after install, run this !

sed -i 's///g' /etc/ImageMagick-6/policy.xml