在装有 LuaHBTeX v1.13.2 / TeX Live 2021 的 Arch Linux 上，我突然在编译时收到错误消息。我的问题是：
- 为什么这个行号很高“l.6171”——我的.tex 文件只有 1228 行？
- 这个错误是什么意思，它指的是哪本手册的第 192 页？
\footref没有出现在我的 .tex 文件中。 - 这是 TeX 发行版中的一个错误吗？
Rc files read:
NONE
Latexmk: This is Latexmk, John Collins, 20 November 2021, version: 4.76.
Latexmk: applying rule 'lualatex'...
Rule 'lualatex': File changes, etc:
Changed files, or newly in use since previous run(s):
'bedienungsanleitung_final_de.tex'
------------
Run number 1 of rule 'lualatex'
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Running 'lualatex -recorder "bedienungsanleitung_final_de.tex"'
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This is LuaHBTeX, Version 1.13.2 (TeX Live 2021/Arch Linux)
restricted system commands enabled.
(./bedienungsanleitung_final_de.tex
LaTeX2e <2021-11-15> patch level 1
L3 programming layer <2021-11-22>
(/usr/share/texmf/tex/latex/koma-script/scrartcl.cls
Document Class: scrartcl 2019/12/23 v3.28 KOMA-Script document class (article)
(/usr/share/texmf/tex/latex/koma-script/scrkbase.sty
(/usr/share/texmf/tex/latex/koma-script/scrbase.sty
(/usr/share/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/share/texmf/tex/latex/koma-script/scrlfile.sty
LaTeX Warning: Command \InputIfFileExists has changed.
Check if current package is valid.
))) (/usr/share/texmf/tex/latex/koma-script/tocbasic.sty)
(/usr/share/texmf/tex/latex/koma-script/typearea.sty)
! LaTeX Error: Command \footref already defined.
Or name \end... illegal, see p.192 of the manual.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.6171 }
?