You were correct.  Thanks everyone for all your help!!

On Monday, June 8, 2020 at 11:07:43 PM UTC-7, Albert Krewinkel wrote:
>
>
> Joost Kremers writes: 
>
> > On Tue, Jun 09 2020, Aaron Lopez wrote: 
> >> Testing the conversion of .epub to pdf and not having much luck. I 
> downloaded 
> >> a random epub file to test with... 
> >> 
> >> pandoc -f epub -t latex -o mytest.pdf --pdf-engine=pdflatex 
> aliceDynamic.epub 
> >> --verbose > epub.txt 
> >> 
> >> ! Missing number, treated as zero. 
> >> <to be read again> 
> >>                    \protect 
> >> l.90 ...enter}\rule{0.5\linewidth}{\linethickness} 
> >>                                                   \end{center} 
> >> !  ==> Fatal error occurred, no output PDF file produced! 
> >> Transcript written on C:\tex2pdf.-5080fd875f0b148b\input.log. 
> >> 
> >> Error producing PDF. 
> >> ! Missing number, treated as zero. 
> >> <to be read again> 
> >>                    \protect 
> >> l.90 ...enter}\rule{0.5\linewidth}{\linethickness} 
> >> 
> > 
> > The latex macro `\rule` requires two arguments, a length and a line 
> thickness. 
> > The error message suggests that the macro `\linethickness` isn't 
> defined. I'm 
> > not sure what could be the cause of that, though. 
>
> See also 
>
> https://github.com/jgm/pandoc/commit/d9db76dcf40d1930ad15317d76fd2c90d9114801 
>
> The solution for Aaron is to update pandoc to the latest version. 
>
> -- 
> Albert Krewinkel 
> GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124 
>

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