无法编译 beamer 文件，未定义控制序列 \languagename

Question

我已经在我的 Fedora 机器上安装了 texlivehttps://tex.stackexchange.com/a/301263/28700并且所有软件包都已更新。我在编译代码时遇到了问题。

这个最小的例子有效：

\documentclass{article}

\begin{document}
Hello world!
\end{document}

这个最小的 beamer 示例也可以工作：

\documentclass{beamer}

\begin{document}
  \begin{frame}
    \frametitle{This is the first slide}
    %Content goes here
  \end{frame}
  \begin{frame}
    \frametitle{This is the second slide}
    \framesubtitle{A bit more information about this}
    %More content goes here
  \end{frame}
% etc
\end{document}

我无法编译这个最小代码：

% This text is proprietary.
% It's a part of presentation made by myself.
% It may not used commercial.
% The noncommercial use such as private and study is free
% Sep. 2005
% Author: Sascha Frank
% University Freiburg
% www.informatik.uni-freiburg.de/~frank/


\documentclass{beamer}
\title{Simple Beamer Class}
\author{Sascha Frank}
\date{\today}

\begin{document}

\frame{\titlepage} % removing this line allows the document to compile

\frame{\frametitle{Table of contents}\tableofcontents}


\section{Section no.1}
\frame{\frametitle{Title}
Each frame should have a title.
}
\subsection{Subsection no.1.1  }
\frame{
Without title somethink is missing.
}


\section{Section no. 2}
\subsection{Lists I}
\frame{\frametitle{unnumbered lists}
\begin{itemize}
\item Introduction to  \LaTeX
\item Course 2
\item Termpapers and presentations with \LaTeX
\item Beamer class
\end{itemize}
}

\frame{\frametitle{lists with pause}
\begin{itemize}
\item Introduction to  \LaTeX \pause
\item Course 2 \pause
\item Termpapers and presentations with \LaTeX \pause
\item Beamer class
\end{itemize}
}

\subsection{Lists II}
\frame{\frametitle{numbered lists}
\begin{enumerate}
\item Introduction to  \LaTeX
\item Course 2
\item Termpapers and presentations with \LaTeX
\item Beamer class
\end{enumerate}
}
\frame{\frametitle{numbered lists with pause}
\begin{enumerate}
\item Introduction to  \LaTeX \pause
\item Course 2 \pause
\item Termpapers and presentations with \LaTeX \pause
\item Beamer class
\end{enumerate}
}

\section{Section no.3}
\subsection{Tables}
\frame{\frametitle{Tables}
\begin{tabular}{|c|c|c|}
\hline
\textbf{Date} & \textbf{Instructor} & \textbf{Title} \\
\hline
WS 04/05 & Sascha Frank & First steps with  \LaTeX  \\
\hline
SS 05 & Sascha Frank & \LaTeX \ Course serial \\
\hline
\end{tabular}}


\frame{\frametitle{Tables with pause}
\begin{tabular}{c c c}
A & B & C \\
\pause
1 & 2 & 3 \\
\pause
A & B & C \\
\end{tabular} }


\section{Section no. 4}
\subsection{blocs}
\frame{\frametitle{blocs}

\begin{block}{title of the bloc}
bloc text
\end{block}

\begin{exampleblock}{title of the bloc}
bloc text
\end{exampleblock}


\begin{alertblock}{title of the bloc}
bloc text
\end{alertblock}
}
\end{document}

失败的原因如下：

(/usr/local/texlive/2020/texmf-dist/tex/latex/translator/translator-theorem-dic
tionary-English.dict
Dictionary: translator-theorem-dictionary, Language: English 
) (./Beamer-class-example1.nav)

Package hyperref Warning: Option `pdfauthor' has already been used,
(hyperref)                setting the option has no effect on input line 14.

! Undefined control sequence.
\trans@languagepath ->\languagename 
                                    ,English
l.17 \frame{\titlepage}
                       
? 
! Emergency stop.
\trans@languagepath ->\languagename 
                                    ,English
l.17 \frame{\titlepage}
                       
End of file on the terminal!

完整日志在这里：https://gist.github.com/183amir/615a9cd2bd5c2027deef3e57b3363555

有人能告诉我我的安装出了什么问题吗？我可以在另一台 Debian 机器上编译 beamer 文件。