Tikz einbinden in Main File fehlerhaft

\documentclass[DIV=12]{scrartcl}
\usepackage{subfiles}
\usepackage{tikz}
\usetikzlibrary{positioning,calc,shapes,arrows,shapes.multipart}
% Define block styles
\tikzset{
    pap/.style={
        draw,
        minimum height=7mm,
        font=\ttfamily\footnotesize,
        align=flush center,
        on grid
    },
    papDecision/.style = {
        diamond,
        draw, 
        text width = 20 mm, 
        align = center, 
        text badly centered,
        inner sep = 1 pt,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papStart/.style = {
        rectangle,
        draw, 
        align = center, 
        text width = 3cm, 
        text badly centered,
        inner sep = 4 pt,
        rounded corners=10pt,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papEnd/.style = {
        rectangle,
        draw, 
        align = center, 
        text width = 3cm, 
        text badly centered,
        inner sep = 4 pt,
        rounded corners=10pt,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papData/.style = {
        trapezium,
        draw, 
        align = center, 
        text width = 20 mm, 
        text badly centered,
        inner sep = 4 pt,
        trapezium left angle=70,
        trapezium right angle=110,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papPredProc/.style = {
        draw,
        rectangle split,
        rectangle split horizontal,
        rectangle split parts = 3,
        rectangle split empty part width=-8pt,
        align = center, 
        %       text width = 4.5 em, 
        text badly centered,
        %        inner sep = 4 pt,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papProcess/.style = {
        rectangle,
        draw,
        align = center, 
        text width = 3cm, 
        text badly centered,
        %inner sep = 2 pt,
        font=\ttfamily\footnotesize,
        %line width = 1,
        minimum width = 30mm,
        minimum height = 7mm,
    },
    papLine/.style = {
        draw,
        -stealth,
        font=\ttfamily\footnotesize,
        %line width = 1,
    },
}

\newcommand{\papYes}{ja}
\newcommand{\papNo}{nein}

\begin{document}
\begin{figure}
  \centering
  \subfile{test-subfiles-sub.tex}
  \caption{Die Abbildung zum ersten Mal}
\end{figure}

\begin{figure}
  \centering
  \subfile{test-subfiles-sub.tex}
  \caption{Die Abbildung zum zweiten Mal}
\end{figure}
\end{document}

\documentclass[test-subfiles.tex]{subfiles}
\begin{document}
\begin{tikzpicture}[node distance = 2cm, auto]

% Place nodes
\node [papStart] (Start1){Start};
\node [papProcess, below of = Start1,yshift= 2mm] (pro4){funktion6};

\node [papDecision, below of = pro4, yshift= -20mm] (dec2){test};

\node [papPredProc,  right of = dec2,xshift=25mm] (predproc2){\nodepart{two}\shortstack{funktion5}};
\node [papPredProc, below of = dec2,yshift= -10mm] (predproc3){\nodepart{two}\shortstack{funktion4}};
\node [papDecision, below of = predproc3, yshift= -20mm](dec3){Anzahl m?};

\node [papPredProc, below of = dec3, xshift=-25mm, yshift= -20mm](predproc4){\nodepart{two}\shortstack{funktion1}};
\node [papPredProc, below of = dec3, yshift= -20mm](predproc5){\nodepart{two}\shortstack{funktion2}};
\node [papPredProc, below of = dec3, xshift=26mm, yshift= -20mm](predproc6){\nodepart{two}\shortstack{funktion3}};
\node [papEnd, below of = predproc5, yshift= -20mm] (End) {Ende};

% Draw edges
\path [papLine] (Start1) -- (pro4);
\path [papLine] (pro4) -- (dec2);
\path [papLine] (dec2) -- node [above] {\papYes} (predproc2);
\path [papLine] (dec2) -- node [right] {\papNo} (predproc3);
\path [papLine] (predproc3) -- (dec3);
\path [papLine] (dec3) -- node [right] {m = 1} (predproc4);
\path [papLine] (dec3) -- node [right] {m = 2} (predproc5);
\path [papLine] (dec3) -- node [right] {m < 2} (predproc6);

\path [papLine] (predproc4) -- (End);
\path [papLine] (predproc5) -- (End);
\path [papLine] (predproc6) -- (End);

\end{tikzpicture}
\end{document}