问尝试编织R标记时出错：！软件包输入错误:未设置用于LaTeX的Unicode character锛(U+FF0C)(输入)

EN

! Package inputenc Error: Unicode character 锛?(U+FF0C)
(inputenc)                not set up for use with LaTeX.

Try other LaTeX engines instead (e.g., xelatex) if you are using pdflatex. See https://bookdown.org/yihui/rmarkdown-cookbook/latex-unicode.html
错误: LaTeX failed to compile Jan-26-in-class-code.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips. See Jan-26-in-class-code.log for more info.
此外: Warning message:
In grepl("==> Fatal error occurred", x[i], fixed = TRUE) :
  输入的字符串1不适用于此语言环境
停止执行

! LaTeX Error: File `unicode-math.sty' not found.

! Emergency stop.
<read *> 

! Unfortunately, the package unicode-math could not be installed.

! Please check the log file:

! C:\Users\86188\AppData\Local\MiKTeX\2.9\miktex\log\xelatex.log

错误: LaTeX failed to compile Jan-26-in-class-code.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips. See Jan-26-in-class-code.log for more info.
停止执行

Warning in install.packages :
  package ‘unicode-math’ is not available for this version of R