[tex4ht] Problem with tex4ht after latest update, adjustbox problem

[Nasser M. Abbasi]

After update TL 2019 just now, I started getting  errors
compiling some files. Here is MWE

======================
make4ht -ulm default foo.tex 'htm,mathjax'
========================
......
(/mnt/g/public_html/styles/adjustbox.4ht
(/usr/local/texlive/2019/texmf-dist/tex/generic/tex4ht/html4.4ht
l.28997 --- TeX4ht warning --- \Configure{Adjustbox}? ---

! LaTeX Error: Missing \begin{document} in `'.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
  ...

l.28998 ...div class="adjustbox" id="\AdjustboxId">}                                                  }
=======================

Here is foo.tex

=========================
\documentclass[12pt]{article}
\usepackage[export]{adjustbox}  %adding this causes the problem
\begin{document}
test
\end{document}
================

TL 2019 on linux. I did a diff and I see some new additions in
html4.4ht related to adjustbox which looks like the cause of this
problem.

Any thoughts?

thanks
--Nasser