Function parse_edges in graphy.py is broken, throwing a KeyError for 'sx' on line 141 in Python 3.6

[seansmckinley]

Minimum example to demonstrate error:

from N2G import yed_diagram
from graphml2svg import Graph
diagram = yed_diagram()
sample_list_graph = [
    {  'source': {'id': 'SW1', 'top_label': 'CORE', 'bottom_label': '1,1,1,1'}, 'src_label': 'Gig0/0', 'target': 'R1', 'trgt_label': 'Gig0/1'},
    {'source': {'id': 'R2', 'top_label': 'DC-PE'}, 'src_label': 'Gig0/0', 'target': 'SW1', 'trgt_label': 'Gig0/2'},
    {'source': {
        'id':'R3', 
        'bottom_label': '1.1.1.3'
        }, 
        'src_label': 'Gig0/0', 
        'target': 'SW1', 
        'trgt_label': 'Gig0/3'
        },
    {'source': 'SW1', 'src_label': 'Gig0/4', 'target': 'R4', 'trgt_label': 'Gig0/1'},
    {'source': 'SW1', 'src_label': 'Gig0/5', 'target': 'R5', 'trgt_label': 'Gig0/7'},
    {'source': 'SW1', 'src_label': 'Gig0/6', 'target': 'R6', 'trgt_label': 'Gig0/11'}
]
diagram.from_list(sample_list_graph)
diagram.dump_file(filename="Sample_graph.graphml", folder="./")
path_2_graph =  './Sample_graph.graphml'
g = Graph(path_2_graph)
g.run()

Traceback:

 File "C:\Users\sm\source\repos\PythonApplication1\PythonApplication1\env2058\lib\site-packages\graphml2svg\graph.py", line 141, in parse_edges
    ls['width'], bend['smoothed'], path['sx'], path['sy'], path['tx'],
KeyError: 'sx'

pip freeze
(env2058) PS C:\Users\ssm> pip freeze

bcrypt==3.2.0
cffi==1.14.6
cryptography==3.4.7
graphml2svg==0.0.4
N2G==0.1.2
Nuitka==0.6.16.3
paramiko==2.7.2
paramiko-expect==0.3.0
pycparser==2.20
PyNaCl==1.4.0
python-igraph==0.9.6
six==1.16.0
svgwrite==1.4.1
texttable==1.6.4