partial_corr error while using more than 500 neurons

[meeelojm]

Hello! I have been using FARCI in datasets that contain less than 500 neurons and around 1800 frames and the partial_corr function has been doing its job. The problem started when I decided to use datasets that are around 2000 neurons and the same number of frames, the message says:

Error using histogram
Expected input number 1, x, to be real.

Error in histogram>parseinput (line 257)
validateattributes(x,{'numeric','logical','datetime','duration'},...

Error in histogram (line 145)
[opts,passthrough,dispatchToCategorical] = parseinput(args,firstaxesinput);

Error in partial_corr (line 18)
histogram(p - diag(diag(p)));

Do you have any idea what can I so to still use FARCI to analyze my data? The workspace is attached.

Thanks for your time.
more_than_500_neurons.zip