sudo sed -i 's/rights="none" pattern="PDF"/rights="read | write" pattern="PDF"/' /etc/ImageMagick-6/policy.xml
sudo sed -i 's/rights="none" pattern="EPS"/rights="read | write" pattern="EPS"/' /etc/ImageMagick-6/policy.xml
sudo sed -i 's/rights="none" pattern="XPS"/rights="read | write" pattern="XPS"/' /etc/ImageMagick-6/policy.xml
sudo sed -i 's/rights="none" pattern="PS"/rights="read | write" pattern="PS"/' /etc/ImageMagick-6/policy.xml