Unbound Local Error upon adding ring graph

[mantacid]

Ran the application from the terminal like suggested in the github page. this was the output:

button clicked
ringgraphBtn
ringgraphBtn
can not create unkown ringgraphBtn object
Traceback (most recent call last):
  File "/home/overseer/ConkyLuaMakerPyQT5/test_ui2.py", line 72, in create_graph
    ID = self.drawings.create(self.sender().objectName())
  File "/home/overseer/ConkyLuaMakerPyQT5/drawings.py", line 41, in create
    return new_id
UnboundLocalError: local variable 'new_id' referenced before assignment
Aborted