Search by words fails

[olegs]

No description provided.

[olegs]

Stacktrace:

AttributeError: 'WordListCorpusReader' object has no attribute '_LazyCorpusLoader__reader_cls'

Traceback (most recent call last)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 2463, in __call__
return self.wsgi_app(environ, start_response)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 2449, in wsgi_app
response = self.handle_exception(e)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 1866, in handle_exception
reraise(exc_type, exc_value, tb)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/Users/oleg/work/pubtrends/models/app/app.py", line 187, in show_ids
papers=prepare_papers_data(data, source, comp, word, author, journal))
File "/Users/oleg/work/pubtrends/models/keypaper/paper.py", line 121, in prepare_papers_data
tokens = tokenize(word)
File "/Users/oleg/work/pubtrends/models/keypaper/utils.py", line 81, in tokenize
stop_words = set(stopwords.words('english'))
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/nltk/corpus/util.py", line 123, in __getattr__
self.__load()
File "/Users/oleg/miniconda3/envs/pubtrends/lib/python3.7/site-packages/nltk/corpus/util.py", line 91, in __load
corpus = self.__reader_cls(root, *self.__args, **self.__kwargs)
AttributeError: 'WordListCorpusReader' object has no attribute '_LazyCorpusLoader__reader_cls'
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