第二个 y 轴上的 ymax 不起作用

Question

如果我在第二个轴上设置 ymax，TeX 会给我一个尺寸太大的错误，我不知道为什么有人看到这个错误吗？

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage{pgfplots}
\usepackage{graphicx}
\usepackage{pgf}
\usepackage{tikz}
\usepackage{float}
\begin{document}
\begin{center}

        \begin{figure}[H]
        \caption{Gemessene Berschleunigung auf gerader und schräger Fläche}
        \label{num1}
            \centering
            \begin{tikzpicture}[baseline=(current axis.south)]
                \begin{axis}[grid = major,width=0.8\textwidth,height=0.35\textheight,
                    x tick label style={/pgf/number format/1000 sep=},
                    xlabel={Zeit $t$ $[s]$},ymax=850,
                    y tick label style={/pgf/number format/1000 sep=},
                    ylabel={Berschleunigung $a$ $[\frac{m}{s^2}]$},
                    axis y line=left,
                    enlarge x limits=0.01,xtick=\empty,
                    legend pos=north west]
                    \addplot [blue,solid,mark options={solid}] table[x=t, y=f,col sep=semicolon] {Mappe1.csv};
                    \label{f}
                    \addlegendentry{$f$}
                \end{axis}
                        \begin{axis}[ymin=0, ymax=1.2,width=0.8\textwidth,height=0.35\textheight,
                    x tick label style={/pgf/number format/1000 sep=},
                    xlabel={Zeit $t$ $[s]$},
                    y tick label style={/pgf/number format/1000 sep=},
                    ylabel={Berschleunigung $a$ $[\frac{m}{s^2}]$},
                    axis y line=right,
                    enlarge x limits=0.01,
                    legend pos=north west]
                    \addlegendimage{/pgfplots/refstyle=f}\addlegendentry{$f$}
                    \addplot [red,solid,mark options={solid}] table[x=t, y=Schub,col sep=semicolon] {Mappe1.csv};
                    \addlegendentry{Schub}
                \end{axis}
            \end{tikzpicture}
        \end{figure}
        \end{center}
\end{document}