That looks like a bug in pandoc to me. There's no PDF template configuration in mod_gnutls, so this seems to affect PDF generation with pandoc's default settings.
The easiest solution for the mod-gnutls package should be to remove the PDF documentation, and maybe replace it with the manual page available in 0.9.0. I added that because I consider it more useful on a server system anyway. ;-) Regards, Fiona
