Test failed using test data "tgraph.vcf/fa"

[wjwei-handsome]

Hello，when I use command： svaha2 -r tgraph.fa -v tgraph.vcf > test.gfa to generate GFA file,I failed with the error info：

`FASTA index found for tgraph.fa Parsed fasta index with 1 entries. Loading variants from tgraph.vcf Parsed 6 variants. Created map of contig to breakpoints from variants. Contig x has 12 breakpoints.

Adding max-node-length breakpoints. Contig x has 14 breakpoints. Sorted and uniquified breakpoints Building reference backbone for x. terminate called after throwing an instance of 'std::out_of_range' what(): at: key not present Aborted`

I need your help,please!