Error while trying to put a Text above a notehead

[Paolo Prete]

Hello David (and Lilypond people),

I just verified that your previous snippet produces erroneous output on pdf
and a compiler error with -dbackend=svg:
(look at : http://lilybin.com/7derud/1  )

Tested on 2.19.84 and 2.19.45 (Lilybin)

{
\override Fingering.staff-padding = #'()
\stemDown
c'-\tweak text "Some text" -1
}

Is there an alternative for it?

Thanks