Beamer 编译错误

Question

我刚刚安装了 Linux min 19.3，完整版 texlive。奇怪的是，任何 beamer 文件在编译时都会产生大量错误。例如，如果我编译以下 MWE

\documentclass[beamer,usepdftitle=false]{beamer}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{multimedia}

\begin{document}
\title[]{\textbf{MWE}}

\maketitle

\end{document}

第一个错误消息如下：

! Undefined control sequence.
l.41 \newrobustcmd
                  *\only{\@ifnextchar<{\beamer@only}{\beamer@@only}}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.


! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.41 \newrobustcmd*
                   \only{\@ifnextchar<{\beamer@only}{\beamer@@only}}
You're in trouble here.  Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

! Undefined control sequence.
l.41 \newrobustcmd*\only
                        {\@ifnextchar<{\beamer@only}{\beamer@@only}}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

到目前为止，非 beamer tex 文件都可以。