Fehlerhafte Referenzierung von 'figures'

\documentclass[paper = a4]{scrbook}
%\documentclass[paper = a4]{scrreprt}
 
\begin{document}
 
 
\addchap{intro}
 
\begin{figure}[!ht] \label{fig: intro fig1}
intro fig1
\caption{intro fig1}
\end{figure}
 
\begin{figure}[!ht] \label{fig: intro fig2}
intro fig2
\caption{intro fig2}
\end{figure}
 
 
\chapter{chp1}
 
 
\chapter{chp2}
 
\begin{figure}[!ht] \label{fig: chp2 fig1}
chp2 fig1
\caption{chp2 fig1}
\end{figure}
 
\begin{figure}[!ht] \label{fig: chp2 fig2}
chp2 fig2
\caption{chp2 fig2}
\end{figure}
 
 
\chapter{chp3}
 
intro fig1 ref: \ref{fig: intro fig1}; intro fig2 ref: \ref{fig: intro fig2}; chp2 fig1 ref: \ref{fig: chp2 fig1}; chp2 fig2 ref: \ref{fig: chp2 fig2};
 
 
\end{document}