fastqc outofmemoryError from seqtk generated files

[wbsimey]

I am getting an odd FastQC error when reading in more than one of my seqtk sub samples. I ran, for e.g.: seqtk sample -s100 TP29441.fastq.gz 10000 > ../sub_fq/TP29441_10k.fastq

if I open one seqtk generated file in FastQC, no problem. If I try to open another seqtk generated file in same FastQC window I get an out of memory error.

Any ideas?

[wbsimey]

and fastp cannot open the files at all.