Texstudio 返回错误

Question

我尝试在 Texstudio 中运行此 beamer。但我遇到了“未定义控制序列。\end{frame}”。beamer 在 overleaf 中编译，但在 Texstudio 中编译失败。

\documentclass{beamer}

\usepackage{rtsched}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{multido}
\usepackage{pstricks}
\usepackage{keyval}
\title{An example of using the \texttt{rtsched} package with Beamer}
\author{Giuseppe Lipari}
\institute[Scuola Superiore Sant'Anna]{Scuola Superiore Sant'Anna -- Pisa}

\usetheme{Madrid}

\begin{document}

\begin{frame}
  \titlepage
\end{frame}

\begin{frame}
  \frametitle{An example with fixed priority}

  \begin{figure}
    \centering
    \begin{RTGrid}[width=10cm]{2}{20}
        %% the first job of task 1 arrives at time 0,
        %% with a relative deadline of 4
        \TaskArrDead{1}{0}{4}
        %% the second job arrives at time 4
        \TaskArrDead{1}{4}{4}
        %% etc
        \TaskArrDead{1}{8}{4}
        \TaskArrDead{1}{12}{4}
        \TaskArrDead{1}{16}{4}
        %% the task executes in intervals [0,1], [4,5], etc.
        \TaskExecution{1}{0}{1}
        \TaskExecution{1}{4}{5}
        \TaskExecution{1}{8}{9}
        \TaskExecution{1}{12}{13}
        \TaskExecution{1}{16}{17}
        %% the second task
        \TaskArrDead{2}{0}{4}
        \TaskArrDead{2}{6}{4}
        \TaskArrDead{2}{12}{4}
        \TaskExecution{2}{1}{4}
        \TaskExecution{2}{6}{8}
        \TaskExecution{2}{9}{10}
        \TaskExecution{2}{13}{16}
      \end{RTGrid}

  \end{figure}

\end{frame}

\end{document}

感谢您的解决方案