TypeError: '<' not supported between instances of 'NoneType' and 'NoneType'

[KamiDuck]

While trying to convert several matlab files to python I got the following error. I cannot for the life of me figure out where it is going wrong.

c:\users\balun\anaconda3\lib\site-packages\ply\lex.py:760: FutureWarning: Possible nested set at position 65
c = re.compile('(?P<%s>%s)' % (fname, _get_regex(f)), self.reflags)
c:\users\balun\anaconda3\lib\site-packages\ply\lex.py:498: FutureWarning: Possible nested set at position 118
lexre = re.compile(regex, reflags)
Traceback (most recent call last):
File "c:\users\balun\anaconda3\lib\site-packages\smop\main.py", line 66, in main
G = resolve.resolve(stmt_list)
File "c:\users\balun\anaconda3\lib\site-packages\smop\resolve.py", line 51, in resolve
G = as_networkx(t)
File "c:\users\balun\anaconda3\lib\site-packages\smop\resolve.py", line 39, in as_networkx
if u.lexpos < v.lexpos:
TypeError: '<' not supported between instances of 'NoneType' and 'NoneType'
Errors: 1

[Rohanjos97]

I'm also facing the same issue. @KamiDuck, did you find any workaround for this?