Unable to open object (object 'pcontig_000' doesn't exist)

[Ram-Nagar]

Hi There,
I am using the "A tour of scikit-allel" to analyse my data. After converting the vcf file to hd5 when I select a chromosome to work with as you described in the illustration as chrome='pconting_0000', I get the error "Unable to open object (object 'pcontig_000' doesn't exist)". I am new to python so not sure what is wrong any help would be highly appreciated.

Thanks
Ram