JSONDecodeError while trying to send a createReport request

[ANarayanan-Cervello]

Hi Team,
I have been facing the below error while trying to invoke the create_report API for Reports.

createReportResponse = ReportsV2(credentials = credentials
                                 , marketplace = my_marketplace).create_report(
    reportType="GET_VENDOR_SALES_DIAGNOSTIC_REPORT",
    dataStartTime = '2022-04-04',
    dataEndTime = '2022-04-04'
)
JSONDecodeError: Expecting value: line 1 column 1 (char 0)

The curious thing about the error is that, the occurrence is intermittent, and we have been seeing it only since the last couple of days. Therefore, we are finding it quite difficult to reproduce this. Most probably looks like an issue from Amazon end while trying to JSONify the response received from their end.

Please find the complete stack trace below:

JSONDecodeError                           Traceback (most recent call last)
<command-806579102930794> in <module>
----> 1 createReportResponse = ReportsV2(credentials = credentials
      2                                  , marketplace = my_marketplace).create_report(
      3     reportType="GET_VENDOR_SALES_DIAGNOSTIC_REPORT",
      4     dataStartTime = argStartDate,
      5     dataEndTime = argEndDate

/databricks/python/lib/python3.8/site-packages/sp_api/base/helpers.py in wrapper(*args, **kwargs)
     17                 'method': method
     18             })
---> 19             return function(*args, **kwargs)
     20 
     21         wrapper.__doc__ = function.__doc__

/databricks/python/lib/python3.8/site-packages/sp_api/api/reports/reports.py in create_report(self, **kwargs)
    112         if isinstance(kwargs.get('dataEndTime', None), datetime):
    113             kwargs.update({'dataEndTime': kwargs.get('dataEndTime').isoformat()})
--> 114         return self._request(kwargs.pop('path'), data=kwargs)
    115 
    116     @sp_endpoint('/reports/2021-06-30/reports/{}', method='DELETE')

/databricks/python/lib/python3.8/site-packages/sp_api/base/client.py in _request(self, path, data, params, headers, add_marketplace)
    127                       auth=self._sign_request(),
    128                       proxies=self.proxies)
--> 129         return self._check_response(res)
    130 
    131     def _check_response(self, res) -> ApiResponse:

/databricks/python/lib/python3.8/site-packages/sp_api/base/client.py in _check_response(self, res)
    136                 js = {'status_code': res.status_code}
    137         else:
--> 138             js = res.json() or {}
    139         if isinstance(js, list):
    140             js = js[0]

/databricks/python/lib/python3.8/site-packages/requests/models.py in json(self, **kwargs)
    898                     # used.
    899                     pass
--> 900         return complexjson.loads(self.text, **kwargs)
    901 
    902     @property

/usr/lib/python3.8/json/__init__.py in loads(s, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
    355             parse_int is None and parse_float is None and
    356             parse_constant is None and object_pairs_hook is None and not kw):
--> 357         return _default_decoder.decode(s)
    358     if cls is None:
    359         cls = JSONDecoder

/usr/lib/python3.8/json/decoder.py in decode(self, s, _w)
    335 
    336         """
--> 337         obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    338         end = _w(s, end).end()
    339         if end != len(s):

/usr/lib/python3.8/json/decoder.py in raw_decode(self, s, idx)
    353             obj, end = self.scan_once(s, idx)
    354         except StopIteration as err:
--> 355             raise JSONDecodeError("Expecting value", s, err.value) from None
    356         return obj, end

JSONDecodeError: Expecting value: line 1 column 1 (char 0)