Latex Footnote in Figure Caption

To add a footnote in a figure caption:

\begin{figure}[!ht]
    \centering
    \includegraphics[width=3in]{images/radar2.png}
    \caption{A radar chart\protect\footnotemark ~shows overview  of the advantages and disadvantages of map-based dashboard and storytelling map. }
    \label{fig:comparison2}
\end{figure}
\footnotetext{The style referred to:  https://www.visualcinnamon.com/2015/10/different-look-d3-radar-chart.html}

Generated PDF:

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References:

Footnote in caption and in the same page of caption

Argument of \caption@ydblarg has an extra }