I'm using Springer template which is the one in the following link: https://www.springer.com/gp/computer-science/lncs/conference-proceedings-guidelines
To download the template: ftp://ftp.springernature.com/cs-proceeding/llncs/llncs2e.zip
My problem is that, when I add arabtex library the sections numbers disappeared.
Following the solution by this question, I added these in the beginning:
\usepackage{arabtex}
\usepackage{utf8}
and I added "\setcode{utf8}" after "\begin{document}" line.
But then, the sections numbers disappeared.

lualatexorxelatexto compilesamplepaper.texwith eitherarabluatexorarabxetexto insert Arabic? – Robert Alessi Jun 18 '19 at 22:21lualatex, but you can achieve the same result witharabxetexandxelatex. – Robert Alessi Jun 18 '19 at 22:46