This is XeTeX, Version 3.14159265-2.6-0.999992 (TeX Live 2020/W32TeX) (preloaded format=xelatex 2021.2.28)  6 MAR 2021 14:21
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**c5.tex
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LaTeX2e <2020-10-01> patch level 4
L3 programming layer <2021-02-18>
! Undefined control sequence.
l.1 \chapter
            {نتیجه‌گیری و پیشنهادات}
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.


! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1 \chapter{ن
              تیجه‌گیری و پیشنهادات}
You're in trouble here.  Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

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)
! Emergency stop.
<*> c5.tex
          
*** (job aborted, no legal \end found)

 
Here is how much of TeX's memory you used:
 15 strings out of 476939
 277 string characters out of 5826132
 296458 words of memory out of 5000000
 20108 multiletter control sequences out of 15000+600000
 403430 words of font info for 27 fonts, out of 8000000 for 9000
 1348 hyphenation exceptions out of 8191
 12i,0n,15p,107b,16s stack positions out of 5000i,500n,10000p,200000b,80000s
No pages of output.
