beamerarticle and verbatim: how to make fragile?

Within a beamerarticle style I would like to have use of verbatim. I am using the package ‘verbatimbox’. It seems as though together the two packages throw an error (based on the MWE below)

‘Paragraph ended before verbatim@start was complete.’

An output is generated but it does not display the verbatim line breaks nor spacing correctly.

Searching on this site I came across the idea of making the frame fragile, which of course works when you have a frame to make fragile. But I have no frame at this point.

Is there any way to have such a verbatim functionality?

Below is a fully stripped down MWE which is why I have no frames within a beamerarticle.

documentclass{article}
usepackage{beamerarticle}
usepackage{verbatimbox}

begin{document}

mode<article>{
text before

begin{myverbbox}{mybox}

first line
    second line

    third    line
    
end{myverbbox}

mybox

text after
}

end{document}

documentclass{article}
usepackage{beamerarticle}
usepackage{verbatimbox}

begin{document}
begin{myverbbox}{mybox}

first line
    second line

    third    line
    
end{myverbbox}

mode<article>{
text before

mybox

text after
}

end{document}