未定义的控制序列 标题页

Question

在下面的代码中，我试图设计我的论文的页面。不幸的是，我的名字没有定义

\documentclass[12pt,twoside]{masterthesis}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[a4paper,width=150mm,top=25mm,bottom=25mm,bindingoffset=6mm]{geometry} 
\usepackage{amsmath} 
\usepackage{hyperref} 
\usepackage{dirtytalk} 
\newcommand\tab[1][1cm]{\hspace*{#1}} 
\usepackage{placeins} 
\usepackage{longtable} 
\usepackage{listings} 
\usepackage{caption} 
\usepackage{amsmath} 
\graphicspath{{images/}} 
\begin{document}
    \begin{titlepage}
    \begin{center}
        \vspace*{1cm}
        \Huge
        \textbf{Thesis Title }

        \vspace{1.5cm}

        \author{author name }

        \advisor{Prof.Name 1 \\
                prof. Name 2 }

        \examiner{Prof. Name 3}

        \vfill

        A thesis presented for the degree of\\
        Master of Data Science and Engineering

        \vspace{0.8cm}

        \includegraphics[width=0.4\textwidth]{images/university.jpg}
         \vspace{0.8cm}

        \large
        Department of Informatics, Gioengineering, Robotics, and Systems Engineering\\
        University of Genoa\\
        Italy-Genoa\\
        2019\\

    \end{center}
\end{titlepage}

但输出错误，即未定义的控制序列，并且作者姓名不能出现