How to get earnings from iexcloud?

[prRZ5F4LXZ]

I tried the following command. I can retrieve dividend with a token of a free account. But I can not get earnings. Does anybody know what is wrong?

>>> import iexcloud
>>> iexcloud.set_token(mytoken)
>>> stock = Stock("KO")
>>> stock.get_earning(2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/iexcloud/stock.py", line 115, in get_earning
    output = self._create_output(response, "earnings")
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/iexcloud/stock.py", line 35, in _create_output
    raise response.raise_for_status()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/requests/models.py", line 953, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 451 Client Error: The requested data requires permission to access. for url: https://cloud.iexapis.com/stable/stock/KO/earnings/2?token=mytoken
>>> stock.get_dividend("1y")
   amount currency declaredDate      description      exDate  flag  frequency paymentDate  recordDate    refid symbol         id key   subkey       date        updated
0    0.42      USD   2021-10-21  Ordinary Shares  2021-11-30  Cash  quarterly  2021-12-15  2021-12-01  2342782     KO  DIVIDENDS  KO  2342782 2021-11-30  1634941806000
1    0.42      USD   2021-07-14  Ordinary Shares  2021-09-14  Cash  quarterly  2021-10-01  2021-09-15  2269888     KO  DIVIDENDS  KO  2269888 2021-09-14  1626348853000
2    0.42      USD   2021-04-21  Ordinary Shares  2021-06-14  Cash  quarterly  2021-07-01  2021-06-15  2213420     KO  DIVIDENDS  KO  2213420 2021-06-14  1619089678000
3    0.42      USD   2021-02-18  Ordinary Shares  2021-03-12  Cash  quarterly  2021-04-01  2021-03-15  2168342     KO  DIVIDENDS  KO  2168342 2021-03-12  1613791601000