Hi @Ehud,
Sorry for the excessive delay on my part. Would you be able to share the first 30 records (or 60 lines) of sample1.fna.gz and upload the file from this command?
gunzip -c sample1.fna.gz | head -n 60 > example.fna
Everything you have shared so far looks like the right way of doing this, so I need to see where our validator is falling over specifically. Since it only reads the first 30 records, we should only need 60 lines to find that out.