Fieldtrip: ft_freqstatistics for EEG data (cluster correction)

Hi @Francois,
I'm using the Fieldtrip function ft_freqstatistics to compare the PSD results of 22 participants that performed a task in two different conditions (listen an audio stimulus of different lengths and characteristics). Only one trial for each condition was delivered. I used an EEG EGI NET with 64 channels . When I run the process (Process2/Test/Fieldtrip: fq_freqstatistics) I obtain after 30 sedonds this error:

I'm using the latest version of Brainstorm (12-Mar-2020) and FieldTrip (20200315).

What's wrong? Could you please help me?

Regards,

Francesco