Hi @ezgi,
Apologies for the delay here! Thanks for providing all of those details as well as the error logs. Here's what I found:
Found blank or whitespace-only line before '+' in FASTQ file
Here's another forum post that addresses this same error - I'd recommend trying a couple of the suggestions provided there as a starting point. If you are still unsuccessful, let me know and we will investigate further!
Cheers,
Liz