[Mne_analysis] mne watershed: inner skull not inside the outer skull

[Mina Jamshidi]

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Dear All,

what is the remedy when there is the following error for bem calculation (with mne watershed_bem)?
Surface inner skull is not completely inside surface outer skull

Best,
Mina
P.S. I plot the sufaces using mne.viz.plot_bem and see that the inner skull is not inside in outer skull surface.