Running bib2html results in module 'bibtex' not found

[p]

Running bib2html results in the following error:

lua5.1: /usr/bin/bib2html:6: module 'bibtex' not found:
 no field package.preload['bibtex']
 no file './bibtex.lua'
 no file '/usr/local/share/lua/5.1/bibtex.lua'
 no file '/usr/local/share/lua/5.1/bibtex/init.lua'
 no file '/usr/local/lib/lua/5.1/bibtex.lua'
 no file '/usr/local/lib/lua/5.1/bibtex/init.lua'
 no file '/usr/share/lua/5.1/bibtex.lua'
 no file '/usr/share/lua/5.1/bibtex/init.lua'
 no file './bibtex.so'
 no file '/usr/local/lib/lua/5.1/bibtex.so'
 no file '/usr/lib/x86_64-linux-gnu/lua/5.1/bibtex.so'
 no file '/usr/lib/lua/5.1/bibtex.so'
 no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
 [C]: in function 'require'
 /usr/bin/bib2html:6: in main chunk
 [C]: ?

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nbibtex 0.9.18-11
ProcVersionSignature: Ubuntu 4.13.0-43.48~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-43-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Jun 22 12:41:23 2018
InstallationDate: Installed on 2017-11-21 (213 days ago)
InstallationMedia: Xubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: nbibtex
UpgradeStatus: No upgrade log present (probably fresh install)