Using TexLive 2021, I got the error below. How to fix it? What input file should one give? % context math_style.tex resolvers | formats | executing runner 'run luatex format': /usr/local/texlive/2021/bin/universal-darwin/luatex --jobname="math_style" --fmt=/Users/<name>/Library/texlive/2021/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.fmt --lua=/Users/<name>/Library/texlive/2021/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.lui --c:currentrun=1 --c:fulljobname="./math_style.tex" --c:input="./math_style.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:texmfbinpath="/usr/local/texlive/2021/bin/universal-darwin" This is LuaTeX, Version 1.13.2 (TeX Live 2021) system commands enabled. ** Please type the name of your input file. **