额外的 \endgroup,缺少 \begin{document} 编译错误

额外的 \endgroup,缺少 \begin{document} 编译错误

复制错误所需的最少代码只有三行:

\input{report_template.cls}

\begin{document}

\end{document}

我怀疑这是“report_template.cls”的问题,但这是我们必须使用的模板。有没有简单的方法可以解决这种错误?

Overleaf 中的错误输出:

Extra \endgroup.

\document ->\endgroup 
                      \document@inithook \true@sw {}\UseOneTimeHook {begindo...
l.3 \begin{document}
                    

LaTeX Error: Missing \begin{document}.

No \begin{document} command was found. Make sure you have included \begin{document} in your preamble, and that your main document is set correctly.                                              
                                                  
l.3 \begin{document}
                    

模板“.cls”文件包含以下代码:

\NeedsTeXFormat{LaTeX2e} 

%\DeclareOption*{\PassOptionsToClass{\CurrentOption}{report}}
%\ProcessOptions\relax

%\LoadClass[a4paper,11pt]{report}

\documentclass[%
reprint,
amsmath,amssymb,
aps,
floatfix
]{revtex4-2}

\RequirePackage{PRL-lab}
\usepackage[caption=false]{subfig}
\usepackage{natbib}
\bibliographystyle{WLreferences}

\endinput

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