Hello @bettya,
There are kind of two problems here.
First let's address the error: The error is not because you have 8nt vs 12nt ( Although that will be a problem). It is actually causing an error because there is no parameter named --p-golay-error-correction-details. You want either--p-golay-error-correction or --p-no-golay-error-correction. or If you want to print error correction details you will have to use this output option: –o-error-correction-details. All this is detailed in your error as well.
Now having said that, let's talk about you having 8nt rather then the 12nt. Unfortunately from what I understand you cant use the --p-golay-error-correction because you have 8nt and not the required 12nt. You will have to use this parameter : --p-no-golay-error-correction. Here is a post talking about the same thing.
Hope this helps!
Chloe 