Fix xelatex error of math symbol

** WARNING ** This .map file looks like a dvips format fontmap file.
** WARNING ** -- Current input buffer is: aealbattar ae_AlBattar "ArabeyesArabicEncoding ReEncodeFont" < ararabeyes.enc < ae_albattar.pfb
** WARNING ** -- Reading fontmap file stopped at: file="pdftex.map", line=6.
[3] [4]
[5] [6] [7] [8] [9]
[10] ) (./rebinning_fore.tex [11]
Chapter 3.


from the link https://bugs.launchpad.net/ubuntu/+source/texlive-bin/+bug/364627


In brief, edit the configuration file: /etc/texmf/dvipdfm/dvipdfmx.cfg
Comment the line "f pdftex.map" by adding a percent symbol at the beginning of the line.
Uncomment the line "f dvipdfm.map" by removing the percent symbol.
Save and run xelatex again.