lwarp to html issues with termcal

Question

I am trying to convert my LaTeX document into HTML for accessibility reasons. Unfortunately, I have not found a package that correctly creates an accessible document (for images and tables), and so I was told to convert it to HTML, and that way, it can be accessible. I have tried various techniques that are documented in the Stack Exchange and found that lwarp has the best conversion to the display of my PDF output. However, it seems that lwarp has an issue when using the package termcal. After I compiled and ran the code lwarpmk html, I end up with an error ! Misplaced alignment tab character &. <inserted text> ...ut \scshape \centering Tuesday& \struct \scshape \centering.... I have tried going into the code of termcal and based on the lwarp documentation enclosing the line of code in error with \StartDefiningTabulars and \EndDefiningTabulars did not work. It did create an HTML document, but the calendar was missing. Any help with this will be greatly appreciated.

I am running the code on MacBook Pro 2019 using a program called Texpad with pdfLaTeX.

Below is my MWE from Brian Hall's sample syllabus that I have changed to use termcal:

% This syllabus template was created by:
% Brian R. Hall
% Associate Professor, Champlain College
% www.brianrhall.net

% Document settings
\documentclass[11pt]{article}
\usepackage{lwarp}
\usepackage[margin=1in]{geometry}
\usepackage[pdftex]{graphicx}
\usepackage{multirow}
\usepackage{setspace}
\usepackage[pdftex,                                     % For accessibility requirements
            pdftitle={CSCI 133 SPRING 2020},
            pdflang={en-GB}]{hyperref}
\usepackage{termcal} % Works with the calendar display
\pagestyle{plain}
\setlength\parindent{0pt}

\begin{document}

% Course information
\begin{tabular}{ l l }
  \multirow{3}{*}{%InsertImage
                 } 
  & \LARGE Course Code \\\\
  \mrowcell & \LARGE Course Title \\\\
  \mrowcell & \LARGE Day(s), Time, Place \\\\
\end{tabular}
\vspace{10mm}

\newpage

% Course Outline
\newcommand{\TRClass}{%
\skipday % Monday (no class)
\calday[Tuesday]{\classday} % Tuesday
\skipday % Wednesday (no class)
\calday[Thursday]{\classday} % Thursday
\skipday % Friday 
\skipday\skipday % weekend (no class)
}

\newcommand{\Holiday}[2]{%
\options{#1}{\noclassday}
\caltext{#1}{#2}
}


\textbf {\large Tentative Course Outline}:

The weekly coverage might change as it depends on the progress of the class.  However, you must keep up with the reading assignments.

\begin{center}
\begin{calendar}{01/27/2020}{17} % Semester starts on 01/27/2020 and last for 17
                    % weeks, including finals week
\setlength{\calboxdepth}{.3in}
\TRClass
% schedule
\caltexton{1}{Intro to course and data structures}
\caltextnext{C++ review}
\caltextnext{C++ review, cont.}

% ... and so on

% Holidays
\Holiday{2/14/2020}{Lincoln's Birthday Holiday}
\Holiday{2/17/2020}{Presidents' Day Holiday}
\Holiday{4/6/2020}{Spring Break}
\Holiday{4/7/2020}{Spring Break}
\Holiday{4/8/2020}{Spring Break}
\Holiday{4/9/2020}{Spring Break}
\Holiday{4/10/2020}{Spring Break}

% ... and so on

%\options{12/11/2017}{\noclassday} % finals week
%\options{12/12/2017}{\noclassday} % finals week
%\options{12/13/2017}{\noclassday} % finals week
%\options{12/14/2017}{\noclassday} % finals week
%\options{12/15/2017}{\noclassday} % finals week



%\caltext{5/15/2017}{\textbf{Final Exam: 8:00am - 10:30am}}
\end{calendar}
\end{center}

\end{document}