我使用mdpi的latex模板生成pdf文件，文件的第一页不是摘要，而是一串代码中没有出现的文本

Question

生成的pdf文件的第一页是这样的。非常混乱的文本，我在任何代码中都找不到这个内容。

运行代码的时候报的错误是这样的，但是PDF完全可以编译通过，并且内容也没有问题，但是PDF的第一页就像第一张图那样。

以下是我的部分代码，我删除了部分代码中的注释：

%  LaTeX support: [email protected] 
%  For support, please attach all files needed for compiling as well as the log file, and specify your operating system, LaTeX version, and LaTeX editor.

%=================================================================
\documentclass[journal,article,submit,pdftex,moreauthors]{Definitions/mdpi} 
\usepackage[UTF8]{ctex}
\usepackage{float}
\usepackage{fancyhdr}
\usepackage{etoolbox}
\makeatletter
\patchcmd{\@maketitle}
{\hfill \href{https://www.mdpi.com}}
{\includegraphics[height=1cm]{Definitions/logo-electronics}\hfill \href{https://www.mdpi.com/electronics}}
{}{}
\makeatother
%=================================================================
% MDPI internal commands - do not modify
\firstpage{1} 
\makeatletter 
\setcounter{page}{\@firstpage} 
\makeatother
\pubvolume{1}
\issuenum{1}
\articlenumber{0}
\pubyear{2023}

\copyrightyear{2023}
%\externaleditor{Academic Editor: Firstname Lastname}
\datereceived{ } 
\daterevised{ } % Comment out if no revised date
\dateaccepted{ } 
\datepublished{ } 
%\datecorrected{} % For corrected papers: "Corrected: XXX" date in the original paper.
%\dateretracted{} % For corrected papers: "Retracted: XXX" date in the original paper.
\hreflink{https://doi.org/} % If needed use \linebreak
%\doinum{}
%\pdfoutput=1 % Uncommented for upload to arXiv.org


%=================================================================
% Full title of the paper (Capitalized)
\Title{Mathematical Named}

% MDPI internal command: Title for citation in the left column
\TitleCitation{Electronics}

% Authors, for the paper (add full first names)
\Author{Qiuyu $^{1,2}$}

%\longauthorlist{yes}

% MDPI internal command: Authors, for metadata in PDF
\AuthorNames{Qiu}

% MDPI internal command: Authors, for citation in the left column
\AuthorCitation{Qiu}
% If this is a Chicago style journal: Lastname, Firstname, Firstname Lastname, and Firstname Lastname.

% Affiliations / Addresses (Add [1] after \address if there is only one affiliation.)
\address{%
$^{1}$ \quad test1\\
$^{2}$ \quad test2\\
$^{3}$ \quad test3\\}
\corres{Correspondence:}

\abstract{Mathematical named}
\keyword{Named entity recognition; BiLSTM-CRF; Adversarial training; Self-attentive mechanism; Mathematical texts} 
\begin{document}