[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 41, in <module>
File "site.py", line 37, 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 1108, in run
File "calibre/customize/conversion.py", line 242, in __call__
File "calibre/ebooks/conversion/plugins/recipe_input.py", line 139, in convert
File "calibre/web/feeds/news.py", line 1073, in download
File "calibre/web/feeds/news.py", line 1252, in build_index
File "<string>", line 42, in parse_index
TypeError: 'NoneType' object is not subscriptable