everyone, I meet a problem when using Overleaf to edit the template from ELSEVIER, which can be downloaded at https://www.ctan.org/pkg/els-cas-templates/. Then occur six errors after adding:
\maketitle
Errors:
And a minimal example is shown below, u may use Overleaf to check.
\documentclass[a4paper,fleqn]{cas-dc}
%\usepackage[numbers]{natbib}
%\usepackage[authoryear]{natbib}
\usepackage[authoryear,longnamesfirst]{natbib}
\usepackage{amssymb} % Add
\usepackage{bbding} % Add
\usepackage{color} % Add
%%%Author macros
\def\tsc#1{\csdef{#1}{\textsc{\lowercase{#1}}\xspace}}
\tsc{WGM}
\tsc{QE}
%%%
\begin{document}
\let\WriteBookmarks\relax
\def\floatpagepagefraction{1}
\def\textpagefraction{.001}
\shorttitle{US}
\shortauthors{Z}
\title [mode = title]{US}
% -------------------------------- Authors -------------------------------- %
\author[a]{Z}[style=chinese]
% Corresponding author indication
\cormark[<corr mark no>]
% Footnote of the first author
\fnmark[<footnote mark no>]
% Email id of the first author
\ead{A}
% URL of the first author
% \ead[url]{<URL>}
% Credit authorship
\credit{A}
% Address/affiliation
\affiliation[a]{organization={A},
addressline={A},
% city={},
% citysep={}, % Uncomment if no comma needed between city and postcode
postcode={A},
% state={},
country={A}}
\author[a]{A}[style=chinese]
% Footnote of the second author
\fnmark[*]
% Email id of the second author
\ead{A}
% Credit authorship
\credit{A}
% Corresponding author text
\cortext[1]{Corresponding author}
% -------------------------------- Abstract -------------------------------- %
\begin{abstract}
A
\end{abstract}
% -------------------------------- Keywords -------------------------------- %
\begin{keywords}
\sep A
\end{keywords}
% -------------------------------- Introduction -------------------------------- %
\maketitle
\section{Introduction}\label{1}
A
% -------------------------------- Biography -------------------------------- %
\end{document}
Thanks to everyone in advance! Have a nice day!
>Solution :
You must fill in something for the placeholders in
\cormark[<corr mark no>]
and
\fnmark[<footnote mark no>]
\documentclass[a4paper,fleqn]{cas-dc}
%\usepackage[numbers]{natbib}
%\usepackage[authoryear]{natbib}
\usepackage[authoryear,longnamesfirst]{natbib}
\usepackage{amssymb} % Add
\usepackage{bbding} % Add
\usepackage{color} % Add
%%%Author macros
\def\tsc#1{\csdef{#1}{\textsc{\lowercase{#1}}\xspace}}
\tsc{WGM}
\tsc{QE}
%%%
\begin{document}
\let\WriteBookmarks\relax
\def\floatpagepagefraction{1}
\def\textpagefraction{.001}
\shorttitle{US}
\shortauthors{Z}
\title [mode = title]{US}
% -------------------------------- Authors -------------------------------- %
\author[a]{Z}[style=chinese]
% Corresponding author indication
\cormark[1]
% Footnote of the first author
\fnmark[1]
% Email id of the first author
\ead{A}
% URL of the first author
% \ead[url]{<URL>}
% Credit authorship
\credit{A}
% Address/affiliation
\affiliation[a]{organization={A},
addressline={A},
% city={},
% citysep={}, % Uncomment if no comma needed between city and postcode
postcode={A},
% state={},
country={A}}
\author[a]{A}[style=chinese]
% Footnote of the second author
\fnmark[*]
% Email id of the second author
\ead{A}
% Credit authorship
\credit{A}
% Corresponding author text
\cortext[1]{Corresponding author}
% -------------------------------- Abstract -------------------------------- %
\begin{abstract}
A
\end{abstract}
% -------------------------------- Keywords -------------------------------- %
\begin{keywords}
\sep A
\end{keywords}
% -------------------------------- Introduction -------------------------------- %
\maketitle
\section{Introduction}\label{1}
A
% -------------------------------- Biography -------------------------------- %
\end{document}