Science News recipe fails

[nano5]

Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 42, in <module>
  File "site.py", line 38, in main
  File "calibre/utils/ipc/worker.py", line 215, in main
  File "calibre/gui2/convert/gui_conversion.py", line 31, in gui_convert_recipe
  File "calibre/gui2/convert/gui_conversion.py", line 25, in gui_convert
  File "calibre/ebooks/conversion/plumber.py", line 1122, in run
  File "calibre/customize/conversion.py", line 245, in __call__
  File "calibre/ebooks/conversion/plugins/recipe_input.py", line 138, in convert
  File "calibre/web/feeds/news.py", line 1069, in download
  File "calibre/web/feeds/news.py", line 1248, in build_index
  File "<string>", line 76, in parse_index
AttributeError: 'NoneType' object has no attribute 'find'