编译我的 .tex 文件时出现错误，例如缺少所需的样式和库。例如：
Pdflatex: security risk: running with elevated privileges
This is pdfTex, Version 3.141592653-2.6-1.40.24 <MiKTeX 22.3> <preloaded format = pdflatex.fmt>
Restricted \write18 enabled.
Entering extended mode
<C:/Users/ B/Documents/main.tex
LaTeX2e <2021-11-15> patch level 1
L3 programming layer <2022-02-24>
<C:\Program Files\MiKTeX\tex/latex/base\article.cls
Document Class: article 2021/10/04 v1.4n Standard LaTeX document class
<C:\Program Files\MiKTeX\tex/latex/base\size10.clo>>
<C:\ Program Files\MiKTeX\tex/latex/base\fontenc.sty
========================================================================
Unfortunately, the package Cyrillic could not be installed.
Please check the log file:
C:\Users\ B \AppData\Local\MiKTeX\miktex\log\pdflatex.log
========================================================================
Package foentenc Error: Encoding file ‘t2aenc.def’ not found.
<fontenc> You might have misspelt the name of the encoding.
See the fontenc package documentation for explanation.
Type H<return> for immediate help.
…
l.111 \ProcessOptions*
因此，我尝试单独安装这些库。MiKTeX 有（https://miktex.org/packages/markdown/files) 不同的附加功能可以完美编译不同类型的文件和库的使用。但我没有找到如何获取它们（github 建议来自不同的作者）我如何单独获取 .sty？