[FieldTrip] help about ft_timelockanalysis

[陈雪]

Dear all，
when I use ft_timelockanalysis like follow,there are some mistake.

cfg                   = [];
cfg.covariance        = 'yes';
cfg.channel           = 'all';
cfg.vartrllength      = 2;
cfg.covariancewindow  = 'all';
timelock              = ft_timelockanalysis(cfg, data_org);
the input is raw data with 102 channels and 1 trials
averaging trials
averaging trial 1 of 1

the call to "ft_timelockanalysis" took 5 seconds
??? Error using ==> mxSerialize
Error during serialization of (null)

Error in ==> ft_postamble_provenance at 76
  cfg.callinfo.outputhash = cellfun(@CalcMD5, cellfun(@mxSerialize,
  cellfun(@eval, ft_default.postamble, 'UniformOutput', false),
  'UniformOutput', false), 'UniformOutput', false);

Error in ==> ft_postamble at 55
  evalin('caller', ['ft_postamble_' cmd]);
Error in ==> ft_timelockanalysis at 401
ft_postamble provenance timelock

Thank you so much for your help!!
xiao
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