reference mode bug

[yipukangda]

I run abg.py with -r para,

agb.py --graph out_nano/assembly_graph.gfa -a Flye -r ~/ecoli_genome/Ecoli_K12.fasta

and get an error massage

Finish parsing.
Running QUAST...
No information about contig mappings to the reference genome

line 124, in parse_mapping_info
    best_aligns[get_match_edge_id(edge_id)][chrom]
KeyError: 'ENA|U00096|U00096.3'

is there anything wrong with the code or the assembly results?

Thanks