log This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020) (preloaded format=pdflatex 2020.9.10)  8 FEB 2022 16:27
entering extended mode
 \write18 enabled.
 %&-line parsing enabled.
**main.tex
(./main.tex
LaTeX2e <2020-02-02> patch level 5

LaTeX Warning: Reference `intorduction' on page 1 undefined on input line 11.


LaTeX Warning: Reference `section1' on page 1 undefined on input line 13.

[1

{/usr/local/texlive/2020/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (/compi
le/output.aux)

LaTeX Warning: There were undefined references.

 )
