KeyError: "tag 'RG' not present"

[ChenDepp]

@brentp
hi, brentp When I run smoove genotype call to re-genotype sample genotypes based on all merged sites, it reports

But I use pysam parse sam file, I can get the RG tag

So how can I debug
hava a good day!

[brentp]

hi, it must be that at least one of your alignments does not have the RG tag.