[Mne_analysis] problem in _check_reference // inverse module

[Alexandre Gramfort]

can you show me what

raw.info

prints for you? did you set channel types properly?

what you need is to set channel types properly and then use

raw.set_eeg_reference('average', projection=True)

see:

https://martinos.org/mne/stable/auto_examples/preprocessing/plot_rereference_eeg.html

HTH
Alex