Error with createVCFplot(VCF) function

[mglgc]

Hi, After a successful plotVCF installation under R-4.2.0, the createVCFplot() function with the example shows next error message:

-> loading VCF file ... -> passed VCF file extension: gz -> indexing VCF file ... Error in value[3L] : file does not appear to be bgzip'd file: ./inst/extdata/exampleVCF.vcf.gz

I've tryed with some others bgzip'd .vcf files of my own but the same error is showed up. Any help to fix it will be welcome. Thank you in advance for your reply.