Having trouble reading .mff file

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  • MNE version: e.g. 1.9.0
  • operating system: macOS 15.2

I am trying to read the resting EEG data collected from EGI system. It has the format in .mff. So I used “raw_eeg = mne.io.read_raw_egi(file_path)” but then I got the error “Number of defined channels (129) did not match the expected channels (3)”.

How should I fix this and read the data in python?

Thank you so much for any help!