plot_stats_with_layout error for mean_kinetic_energy

[thuzz08]

After I upgrade the version from 0.7.7 to 0.10.1, I have error when I try to plot mean_kinetic_energy in Astra.

plot_stats_with_layout(A, ykeys=['mean_kinetic_energy'], 
                           xkey='mean_z', xlim=(0, 14),
                           nice=True, 
                           include_layout=True,
                           include_labels=True, 
                           include_particles=True, 
                           include_legend=True, **kwargs)

The error message is pretty long, but the main reason should be this:

ValueError:
\left<E_\text{kinetic}\right>~(\mathrm{ MeV } )
^
Expected token, found '\' (at char 8), (line:1, col:9)