How to fix the following error, so that the table saved in `\MyTable` can be read by `tabularray`?

> 
> ./tabularrayfilecatch.tex:29: Misplaced alignment tab character &.
> \MyTable ->1 &
> 2 \ 3 & 4 \ 5 & 6 \ 7 & 8 \ 9 & 10 \ 11 & 12 \ 13 & 14 ... l.29 \end
> {tblr}
> 
> 
> 

```
\begin{filecontents*}{mytable.tex}
    1  &   2  \\
    3  &   4  \\
    5  &   6  \\
    7  &   8  \\
    9  &  10  \\
    11  &  12  \\
    13  &  14  \\
    15  &  16  \\
    17  &  18  \\
    19  &  20  \\
\end{filecontents*}

\documentclass{article}
\usepackage[paperheight=75mm]{geometry}
\usepackage{xcolor, catchfile}
\usepackage{tabularray}
\UseTblrLibrary{booktabs,siunitx}
\begin{document}

    \CatchFileDef{\MyTable}{mytable.tex}{}

    \begin{tblr}[ long ]{ colspec = {X S} }
        \toprule[1.5pt]
        One & {{{Two}}}  \\
        \midrule
        \MyTable
        \bottomrule[1.5pt]
    \end{tblr}

\end{document}

```