Dear All,

I am using bcftools to combine 3 VCF files with following command:

bcftools merge -m snps -O v -o merged.vcf a.vcf.gz b.vcf.gz c.vcf.gz

but got these kind of error information:

[E::get_intv] failed to parse TBX_VCF, was wrong -p [type] used?
The offending line was: "##fileformat=VCFv4.2"
[E::get_intv] failed to parse TBX_VCF, was wrong -p [type] used?
The offending line was: "##fileformat=VCFv4.2"
[E::get_intv] failed to parse TBX_VCF, was wrong -p [type] used?
The offending line was: "##fileformat=VCFv4.2"

I don't know what does this mean and how to solve the problem. Can anybody help me out? Thank you in advance.