No value ?

[H3134]

def find_deal_ids(self, data, start, stop):

    # find all deals that were *added* after the start time and before the stop time
    added_ids = [data[i]['id'] for i in range(len(data)) if (start <= pendulum.parse(data[i]['add_time']) < stop)]

    # find all deals that a) had a stage change at any time (i.e., the stage_change_time is not None),
    #                     b) had a stage change after the start time and before the stop time, and
    #                     c) are not in added_ids
    changed_ids = [data[i]['id']
                   for i in range(len(data))
                   if (data[i]['id'] not in added_ids)
                   and (data[i]['stage_change_time'] is not None
                        and start <= pendulum.parse(data[i]['stage_change_time']) < stop)]
    return added_ids + changed_ids

this function keeps returning None and i cant track why this is happening..

this error keeps showing when i try to run it:

CRITICAL argument of type 'NoneType' is not iterable
Traceback (most recent call last):
File "/home/henrique/tap-pipedrive/venv/bin/tap-pipedrive", line 11, in
load_entry_point('tap-pipedrive==1.0.4', 'console_scripts', 'tap-pipedrive')()
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/cli.py", line 34, in main
raise e
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/cli.py", line 31, in main
main_impl()
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/cli.py", line 26, in main_impl
pipedrive_tap.do_sync(catalog)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/tap.py", line 124, in do_sync
for deal_id in stream.get_deal_ids(self):
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/stream.py", line 164, in get_deal_ids
this_page_ids = self.find_deal_ids(response.json()['data'], start=checkpoint, stop=self.stream_start)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/stream.py", line 174, in find_deal_ids
added_ids = [data[i]['id'] for i in range(len(data)) if (start <= pendulum.parse(data[i]['add_time']) < stop)]
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/tap_pipedrive-1.0.4-py3.6.egg/tap_pipedrive/stream.py", line 174, in
added_ids = [data[i]['id'] for i in range(len(data)) if (start <= pendulum.parse(data[i]['add_time']) < stop)]
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/pendulum-2.0.4-py3.6-linux-x86_64.egg/pendulum/parser.py", line 20, in parse
return _parse(text, **options)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/pendulum-2.0.4-py3.6-linux-x86_64.egg/pendulum/parser.py", line 36, in _parse
parsed = base_parse(text, **options)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/pendulum-2.0.4-py3.6-linux-x86_64.egg/pendulum/parsing/init.py", line 70, in parse
return _normalize(_parse(text, **_options), **_options)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/pendulum-2.0.4-py3.6-linux-x86_64.egg/pendulum/parsing/init.py", line 111, in _parse
return _parse_iso8601_interval(text)
File "/home/henrique/tap-pipedrive/venv/lib/python3.6/site-packages/pendulum-2.0.4-py3.6-linux-x86_64.egg/pendulum/parsing/init.py", line 212, in _parse_iso8601_interval
if "/" not in text:
TypeError: argument of type 'NoneType' is not iterable