New code returns an AttributeError

[Pathos315]

See the below:

Traceback (most recent call last): a doi-style search | Total Entries: 127 | Less than 7 minutes remaining from 2021-09-27 10:21:42.66888842.6688888888888 File "/Users/johnfallot/venv/dim_scraper_classed/program_v008.py", line 97, in <module> main() File "/Users/johnfallot/venv/dim_scraper_classed/program_v008.py", line 87, in main res1 = doi_scrape(path) File "/Users/johnfallot/venv/dim_scraper_classed/program_v008.py", line 25, in doi_scrape return pd.DataFrame([run_scrape(search_text, search_field='doi', total=numb_files) for search_text in (_search_terms)]) File "/usr/local/lib/python3.9/site-packages/pandas/core/frame.py", line 570, in __init__ arrays, columns = to_arrays(data, columns, dtype=dtype) File "/usr/local/lib/python3.9/site-packages/pandas/core/internals/construction.py", line 530, in to_arrays return _list_of_dict_to_arrays( File "/usr/local/lib/python3.9/site-packages/pandas/core/internals/construction.py", line 643, in _list_of_dict_to_arrays columns = lib.fast_unique_multiple_list_gen(gen, sort=sort) File "pandas/_libs/lib.pyx", line 353, in pandas._libs.lib.fast_unique_multiple_list_gen File "/usr/local/lib/python3.9/site-packages/pandas/core/internals/construction.py", line 641, in <genexpr> gen = (list(x.keys()) for x in data) AttributeError: 'NoneType' object has no attribute 'keys' johnfallot@Johns-iMac ~ %