This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/Debian) (preloaded format=pdflatex 2024.11.19)  19 NOV 2024 15:10
entering extended mode
 restricted \write18 enabled.
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**KFL_fedlap.tex
(./KFL_fedlap.tex
LaTeX2e <2020-10-01> patch level 4
L3 programming layer <2021-01-09> xparse <2020-03-03>
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Document Class: article 2020/04/10 v1.4m Standard LaTeX document class
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File: size12.clo 2020/04/10 v1.4m Standard LaTeX file (size option)
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(/usr/share/texlive/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
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Package: expl3 2021-01-09 L3 programming layer (loader) 

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File: l3backend-pdftex.def 2020-01-29 L3 backend support: PDF output (pdfTeX)
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Package: xparse 2020-10-27 L3 Experimental document command parser

(/usr/share/texlive/texmf-dist/tex/latex/l3packages/xparse/xparse-generic.tex))
Package: fontspec 2020/02/21 v2.7i Font selection for XeLaTeX and LuaLaTeX

! Fatal Package fontspec Error: The fontspec package requires either XeTeX or
(fontspec)                      LuaTeX.
(fontspec)                      
(fontspec)                      You must change your typesetting engine to,
(fontspec)                      e.g., "xelatex" or "lualatex"instead of
(fontspec)                      "latex" or "pdflatex".

Type <return> to continue.
 ...                                              
                                                  
l.45 \msg_fatal:nn {fontspec} {cannot-use-pdftex}
                                                 

LaTeX does not know anything more about this error, sorry.

Try typing <return> to proceed.
If that doesn't work, type X <return> to quit.

This is a fatal error: LaTeX will abort.



! Emergency stop.
<read *> 
         
l.45 \msg_fatal:nn {fontspec} {cannot-use-pdftex}
                                                 
*** (cannot \read from terminal in nonstop modes)

 
Here is how much of TeX's memory you used:
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 8979 string characters out of 5915887
 275722 words of memory out of 5000000
 17468 multiletter control sequences out of 15000+600000
 403728 words of font info for 28 fonts, out of 8000000 for 9000
 14 hyphenation exceptions out of 8191
 81i,0n,89p,241b,44s stack positions out of 5000i,500n,10000p,200000b,80000s
!  ==> Fatal error occurred, no output PDF file produced!