HTMLDOC Problem:

Htmldoc produced no pdf-output.
Commandline:
/usr/bin/htmldoc --size 100mmx200mm --no-links -t pdf13 --linkstyle plain --no-links --webpage -f /var/www/vhosts/alu-news.de/httpdocs/typo3temp/hd_9vGUlg - 2>/var/www/vhosts/alu-news.de/httpdocs/typo3temp/se_y1KN7T

This is the (stderr) output of the htmldoc command without the htmldoc_append parameters:
If you see no errors here please check your htmldoc_append parameters too.
sh: 1: /usr/bin/htmldoc: not found