Problem with check_sex function with Epicv2

[FlorenceBus]

Hi,
there seems to be an error with the check_sex function.

chrX = manifest[chr == "X", index]
chrY = manifest[chr == "Y", index]
create empty objects because in the manifest, column chr contains "chrX" and "chrY" instead of "X" and "Y".

I deleted the "chr" in the manifest$chr column as a workaround