[Kwant] Get .tex file for the studied system

[aheuchamps]

Hello,

I previously asked how to get the corresponding .tex file of the system I want 
to study.
For example, using the tikzplolib package, I can write the following code:

figLattice = kwant.plot( sys )
tikzplotlib.save( nameGeometry+'.tex' )

However, the corresponding .tex file is empty (see the attached file).
How can I solve that problem ?


Thank you and have a good day,
Alexandre
% This file was created by tikzplotlib v0.8.2.
\begin{tikzpicture}

\end{tikzpicture}