Segmentation fault --- exact cds and protein from genome

[710744562]

I had 200 samples to exact genes cds, so I used "gffread -x" to get my fasta documents, but a part of samples had finished this work. the other samples had error about "Segmentation fault" and just got partial genes fatsa, the same thing happened when i used the command: gffread -x,.
Then I tried to used "gffread -w" to exact transcript and all of samples had finished the work completely, I didn't get error "Segmentation fault". So I don't know how to candle "Segmentation fault" when I used "gffread -x".
(My fasta document are converted from vcf used “ bcftools consensus ”.