\begin{figure}[h] \centering \includegraphics[width=0.5\textwidth]{"my image"} \caption{Find Profit Maximization Area}} \end{figure}
Extra }, or forgotten \endgroup.
\@endfloatbox ...pagefalse \outer@nobreak \egroup
\color@endbox
l.60 \end{figure}
If I press the space, it can still output perfectly. But what does this error mean?