\documentclass{cta-author}
\usepackage{subfig}
\usepackage{diagbox}
\usepackage{multirow}
\usepackage{multicol}
\usepackage{graphicx}
\usepackage{booktabs}
\usepackage{bibtex}
\newtheorem{theorem}{Theorem}{}
\newtheorem{corollary}{Corollary}{}
\newtheorem{remark}{Remark}{}
\begin{document}
\bibliographystyle{iet}
\bibliography{aaa}
\cite{boulkenafet2017face}
为什么我在 texmaker 中运行上述代码时出现错误？