Error: not enough 'y' observations

[hyyuu]

Hello !
Thank you very much for the great scripts.
However, I encounter an error when I run blt_dct_test.R.
The analysis stopped. I have successfully tried the script in a smaller clade.
Could you give me some advice of this error ?

[1] "N triplets: 117480"
  |======================================================================| 100%Error in { : task 19250 failed - "not enough 'y' observations"
Calls: getstats_triplets -> %dopar% -> <Anonymous>
Execution halted

Thanks for your time!

Best,
Alex