HTMLDOC Problem:

Htmldoc produced no pdf-output.
Commandline:

/usr/bin/htmldoc -t pdf13  --webpage -f /var/www/typo3/dummy-4.2.1/typo3temp/hd_B1LhGh - 2>/var/www/typo3/dummy-4.2.1/typo3temp/se_iMwW1n

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: /usr/bin/htmldoc: No such file or directory