Traceback (most recent call last):


 "lib\site-packages\twisted\web\server.py", line 184, in process


 "lib\site-packages\twisted\web\server.py", line 235, in render


 "lib\site-packages\twisted\web\resource.py", line 250, in render


 "Tribler\Core\Modules\restapi\torrents_endpoint.py", line 79, in render_GET


 "Tribler\Core\Category\FamilyFilter.py", line 66, in isXXX
AttributeError: 'NoneType' object has no attribute 'lower'

Traceback (most recent call last):


 "wes.py", line 799, in <module>

main()


 "wes.py", line 210, in main

filtered = apply_muc_filter(filtered, hotfixes_orig)


 "/root/Downloads/wesng/muc_lookup.py", line 94, in apply_muc_filter

superseeded_by[kb] = set(lookup_supersedence(kb))


 "/root/Downloads/wesng/muc_lookup.py", line 119, in lookup_supersedence

updates = rows.find_all(
AttributeError: 'NoneType' object has no attribute 'find_all'
