sketches with k-mers but 0 bases

[drtamermansour]

There are sketches with k-mer content but no snipe bases:

• ERX2252489
• ERX2170396
• ERX2170401
• ERX4088217

[mr-eyes]

probably retracted from the SRA. All currently available snipe-bases on the explore are parsed from the SRA metadata.

[mr-eyes]

not retracted, but unavailable on SRA. However found them on EBI.

[drtamermansour]

We need to re-sketch to auto-calculate the number of bases