Error:

No PDF has been generated.
Command:
/usr/bin/wkhtmltopdf http://www.ssi-schaefer.de/typo3temp/hd_6x5ZV4.html /webroot/html/ssi_cms/production-a/htdocs/typo3temp/hd_ibxm7k  --footer-left http://www.ssi-schaefer.de/news-infocenter/logistik-lexikon/buchstabe/L.html --footer-font-name Arial --footer-font-size 9 2> /webroot/html/ssi_cms/production-a/htdocs/typo3temp/se_PusJiB

This is the (stderr) output of the executed command: