Using TW 20200909 I am getting an error when using lualatex. The sample
document is:
```
\documentclass[a4paper]{article}

\begin{document}

\end{document}
```

When trying to compile I get the following error:
```
> lualatex s.tex
This is LuaHBTeX, Version 1.12.0 (TeX Live 2020/TeX Live for SUSE Linux) 
 restricted system commands enabled.

---! lualatex.fmt was written by luatex
(Fatal format file error; I'm stymied)
```

After editing the file:
```
/etc/texmf/web2c/fmtutil.cnf
```

and taking a lucky guess at changing the config it now works for me. The three
commented out lines below are the original lines in the config file and
directly below are the lines that seem to fix my issue. However, I simply took
an educated guess here.

```
# from latex-bin:
latex pdftex language.dat -translate-file=cp227.tcx *latex.ini
pdflatex pdftex language.dat -translate-file=cp227.tcx *pdflatex.ini
#dvilualatex luatex language.dat,language.dat.lua dvilualatex.ini
#lualatex luatex language.dat,language.dat.lua lualatex.ini
#luajitlatex luajittex language.dat,language.dat.lua lualatex.ini
dvilualatex lualatex language.dat,language.dat.lua dvilualatex.ini
lualatex lualatex language.dat,language.dat.lua lualatex.ini
luajitlatex luajitlatex language.dat,language.dat.lua lualatex.ini
```

Regards,
Gerben