This is LuaHBTeX, Version 1.12.0 (TeX Live 2020)  (format=luahbtex 2020.4.15)  7 JUN 2020 14:35
 restricted system commands enabled.
**test.tex
(./test.tex
! Undefined control sequence.
l.3 \documentclass
                {article}
? r
OK, entering \nonstopmode...
! Undefined control sequence.
l.4 \usepackage
             [paperwidth=10cm]{geometry} % To format the MWE for TeX.SX
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.5 \usepackage
             [english, bidi=basic, layout=sectioning.counters]{babel}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.6 \usepackage
             {fontspec}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.8 \babelprovide
               [import, main, mapdigits]{marathi}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.10 \defaultfontfeatures
                       {Scale = MatchLowercase, Ligatures=TeX}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.11 \babelfont
             {rm}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.15 \babelfont
             {sf}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.17 \babelfont
             [marathi]{rm}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.19 \babelfont
             [marathi]{sf}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.22 \newcommand
              \textenglish[1]{\foreignlanguage{english}{#1}}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.22 \newcommand\textenglish
                          [1]{\foreignlanguage{english}{#1}}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.22 \newcommand\textenglish[1]{\foreignlanguage
                                              {english}{#1}}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! You can't use `macro parameter character #' in horizontal mode.
l.22 ...d\textenglish[1]{\foreignlanguage{english}{#
                                                  1}}
Sorry, but I'm not programmed to handle this case;
I'll just pretend that you didn''t ask for it.
If you're in the wrong mode, you might be able to
return to the right one by typing `I}' or `I$' or `I\par'.

! Undefined control sequence.
l.23 \newenvironment
                  {english}{\begin{otherlanguage}{english}}{\end{otherlangua...
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
l.23 \newenvironment{english}{\begin
                                  {otherlanguage}{english}}{\end{otherlangua...
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

[1{/usr/local/texlive/2020/texmf-var/fonts/map/pdftex/updmap/pdftex.map}])
(\end occurred inside a group at level 1)

### simple group (level 1) entered at line 23 ({)
### bottom level</usr/local/texlive/2020/texmf-dist/fonts/type1/public/amsfonts/
cm/cmr10.pfb>
Output written on test.pdf (1 page, 17724 bytes).

PDF statistics: 12 PDF objects out of 1000 (max. 8388607)
 7 compressed objects within 1 object stream
 0 named destinations out of 1000 (max. 131072)
 1 words of extra memory for PDF output out of 10000 (max. 100000000)