在背面插入以下代码时:
\documentclass{article}
\usepackage{amsmath,xcolor,extsizes,moresize,background,lipsum}
\usepackage{fontspec}
\usepackage{polyglossia}
\usepackage[top=2cm,left=2cm,right=2cm,bottom=2cm]{geometry}
\backgroundsetup{scale=1,opacity=1,color=black,angle=0,contents={\includegraphics[width=\paperwidth,height=\paperheight]{Screenshot.jpg}}}
\newcommand\DeactivateBG{\backgroundsetup{contents={}}}
\newcommand\ActivateBG{\backgroundsetup{contents={\includegraphics[width=\papewidth,height=\paperheight]{Screenshot.jpg}}}}
\begin{document}
\begin{titlepage}
\ActivateBG
\begin{centering}
\Huge
Title
\end{centering}
\end{titlepage}
\end{document}
没有生成任何文档并且我收到以下错误消息: 有人能帮忙吗?谢谢。(Screenshot.jpg 文件已上传到 overleaf)(该文件是使用 lualatex 生成的)