$1$ @show size$($df$)$;

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$$ Code errored $(1$s$)$

LoadError: UndefVarError: df not defined

UndefVarError: df not defined

Stacktrace:

$[1]$ top$-$level scope at show.j l:$641$

$[2]$ include$\_$string$($::Function, ::Module, ::String, ::String$)$ at $./$loading$.$jl:$1091$