.log

This is pdfTeX, Version 3.14159265-2.6-1.40.19 (MiKTeX 2.9.6840 64-bit) (preloaded format=pdflatex 2018.11.19)  24 FEB 2021 02:40
entering extended mode
**yourdoc.tex
("C:\Users\sakul_bp6myy0\AppData\Local\Programs\MiKTeX 2.9\tex\latex\tools\.tex
"
LaTeX2e <2018-04-01> patch level 5
File ignored)
*
(Please type a command or say `\end')
*\end

*\end
! TeX capacity exceeded, sorry [input stack size=5000].
\end #1->\csname end#1
                      \endcsname \@checkend {#1}\expandafter \endgroup \if@e...
<*> \end
        
If you really absolutely need more capacity,
you can ask a wizard to enlarge me.

 
Here is how much of TeX's memory you used:
 7 strings out of 492970
 282 string characters out of 3123041
 61082 words of memory out of 3000000
 3980 multiletter control sequences out of 15000+200000
 3640 words of font info for 14 fonts, out of 3000000 for 9000
 1141 hyphenation exceptions out of 8191
 5000i,0n,5000p,92b,8s stack positions out of 5000i,500n,10000p,200000b,50000s
!  ==> Fatal error occurred, no output PDF file produced!