This is pdfTeX, Version 3.141592653-2.6-1.40.25 (TeX Live 2023) (preloaded format=latex 2023.8.28)  4 JAN 2024 10:26
entering extended mode
 \write18 enabled.
 %&-line parsing enabled.
**main.tex
(./main.tex
LaTeX2e <2023-06-01> patch level 1
L3 programming layer <2023-06-30>
(Font)              Font shape `OT1/cmss/m/sl' tried instead on input line 100.
! Undefined control sequence.
l.102         but here: "\anUndefinedCommand
                                            " lorem ipsum ...
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.

Output written on output.dvi (1 page, 796 bytes).