我正在尝试在 Latex 中使用 Beamer。作为一个简单的测试，我尝试为 Beamer 编译 TeXStudio 模板 以下是输出 但令我惊讶的是，即使经过所有这些操作，它仍然生成了一个 pdf 文件???? 谢谢
This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2022/dev/Debian) (preloaded format=pdflatex 2022.6.27) 2 AUG 2022 06:32
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
**btemp.tex
(./btemp.tex
LaTeX2e <2021-11-15> patch level 1
L3 programming layer <2022-01-21>
(/usr/share/texlive/texmf-dist/tex/latex/beamer/beamer.cls
Document Class: beamer 2022/01/21 v3.65 A class for typesetting presentations
(/usr/share/texlive/texmf-dist/tex/latex/beamer/beamerbasemodes.sty
(/home/brian/texmf/tex/latex/etoolbox/etoolbox.sty
Package: etoolbox 2018/02/11 v2.5e e-TeX tools for LaTeX (JAW)
\etb@tempcnta=\count185
! LaTeX Error: Command \AtBeginEnvironment 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.1752 \csgappto{@begin@#1@hook}}
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
Package etoolbox Warning: Patching '\begin' failed!
(etoolbox) '\AtBeginEnvironment' will not work.
! LaTeX Error: Command \AtEndEnvironment 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.1766 \csgappto{@end@#1@hook}}
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
Package etoolbox Warning: Patching '\end' failed!
(etoolbox) '\AtEndEnvironment' will not work.