Table with figures inside a table inside a tikzposter block

Question

I'm trying to put a table with figures inside a table in a "tikzposter" block environment. Whilst the method below works in documentclass{article} + \begin{document} ... \end{document}. It doesn't work in a \documentclass[...]{tikzposter} environment.

See code:

\documentclass[20pt, a0paper, landscape]{tikzposter}
\usepackage{geometry}
\usepackage{tabularx}
\usepackage{graphicx}

\usetheme{Simple}

\begin{document}

\begin{columns}
\column{0.5}
\block{block title}{
\begin{figure}[ht]
\setkeys{Gin}{width=0.32\linewidth}
\begin{tabularx}{\linewidth}{@{} XX @{}}
    \includegraphics{example-image}\hfill 
    \includegraphics{example-image}\hfill
    \includegraphics{example-image}
   \caption{Some text}
    &   \includegraphics{example-image}\hfill
        \includegraphics{example-image}\hfill
        \includegraphics{example-image} 
        \caption{Some text}
\end{tabularx}
\end{figure}
}

\end{columns}
\end{document}

For this I get an error message.

I also tried:

\documentclass[20pt, a0paper, landscape]{tikzposter}
\usepackage{geometry}
\usepackage{tabularx}
\usepackage{graphicx}

\begin{document}

\begin{columns}
\column{0.5}
\block{block title}{
    \begin{tabular}{cc}
        \begin{figure}
            \begin{tabular}{ccc}
                \includegraphics[width=0.16\linewidth]{example-image} &  
                \includegraphics[width=0.16\linewidth]{example-image} &
                \includegraphics[width=0.16\linewidth]{example-image}
            \end{tabular}
            \caption{Some text}
        \end{figure}
        &
        \begin{figure}
            \begin{tabular}{ccc}
                \includegraphics[width=0.16\linewidth]{example-image} &  
                \includegraphics[width=0.16\linewidth]{example-image} &
                \includegraphics[width=0.16\linewidth]{example-image}
            \end{tabular}
            \caption{Some text}
        \end{figure}
    \end{tabular}
}

\end{columns}
\end{document}

For this I also get an error message.

Inside the block I'm trying to get the table to look like this:

Thanks!

Answer 1

Float environments had not to be inside box. Just remove figure environment and for caption use \captionof{figure}{...}:

\documentclass[20pt, a0paper, landscape]{tikzposter}
\usepackage{geometry}
\usepackage{tabularx}
\usepackage{graphicx}
\usepackage{capt-of} % <--- for captions outside floats

\usetheme{Simple}

\begin{document}

\begin{columns}
\column{0.5}
\block{block title}{
\setkeys{Gin}{width=0.32\linewidth}
\begin{tabularx}{\linewidth}{@{} X@{\qquad}X @{}} % <---
    \includegraphics{example-image}\hfill
    \includegraphics{example-image}\hfill
    \includegraphics{example-image}
   \captionof{figure}{Some text}
    &   \includegraphics{example-image}\hfill
        \includegraphics{example-image}\hfill
        \includegraphics{example-image}
        \captionof{figure}{Some text}
\end{tabularx}
}
\end{columns}
\end{document}