WordApi.getDefinitions and WordApi.getRelatedWords can raise urllib.error.HTTPError: HTTP Error 404: Not Found

[Harmon758]

>>> from wordnik import swagger, WordApi
>>> client = swagger.ApiClient(API_KEY, "http://api.wordnik.com/v4")
>>> api = WordApi.WordApi(client)
>>> api.getRelatedWords("orange", relationshipTypes="rhyme")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Program Files\Python38\lib\site-packages\wordnik\WordApi.py", line 275, in getRelatedWords
    response = self.apiClient.callAPI(resourcePath, method, queryParams,
  File "C:\Program Files\Python38\lib\site-packages\wordnik\swagger.py", line 73, in callAPI
    request = urllib.request.urlopen(requestParams)
  File "C:\Program Files\Python38\lib\urllib\request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Program Files\Python38\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Program Files\Python38\lib\urllib\request.py", line 640, in http_response
    response = self.parent.error(
  File "C:\Program Files\Python38\lib\urllib\request.py", line 569, in error
    return self._call_chain(*args)
  File "C:\Program Files\Python38\lib\urllib\request.py", line 502, in _call_chain
    result = func(*args)
  File "C:\Program Files\Python38\lib\urllib\request.py", line 649, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 404: Not Found

This can also occur with WordApi.getDefinitions and other relationship types such as synonym and antonym.

#7 is most likely referring to this issue as well.