Traceback (most recent call last):

 "/home/ryan/anaconda3/lib/python3.5/site-packages/notebook/base/handlers.py", line 436, in wrapper
result = yield gen.maybe_future(method(self, *args, **kwargs))

 "/home/ryan/anaconda3/lib/python3.5/site-packages/tornado/gen.py", line 870, in run
value = future.result()

 "/home/ryan/anaconda3/lib/python3.5/site-packages/tornado/concurrent.py", line 215, in result
raise_exc_info(self._exc_info)

 "<string>", line 3, in raise_exc_info

 "/home/ryan/anaconda3/lib/python3.5/site-packages/tornado/gen.py", line 230, in wrapper
yielded = next(result)

 "/home/ryan/anaconda3/lib/python3.5/site-packages/notebook/services/contents/handlers.py", line 126, in get
path=path, type=type, format=format, content=content,

 "/home/ryan/anaconda3/lib/python3.5/site-packages/notebook/services/contents/filemanager.py", line 350, in get
model = self._notebook_model(path, content=content)

 "/home/ryan/anaconda3/lib/python3.5/site-packages/notebook/services/contents/filemanager.py", line 310, in _notebook_model
self.mark_trusted_cells(nb, path)

 "/home/ryan/anaconda3/lib/python3.5/site-packages/notebook/services/contents/manager.py", line 447, in mark_trusted_cells
trusted = self.notary.check_signature(nb)

 "/home/ryan/anaconda3/lib/python3.5/site-packages/nbformat/sign.py", line 220, in check_signature
if self.db is None:

 "/home/ryan/anaconda3/lib/python3.5/site-packages/traitlets/traitlets.py", line 439, in __get__
value = self._validate(obj, dynamic_default())

 "/home/ryan/anaconda3/lib/python3.5/site-packages/nbformat/sign.py", line 126, in _db_default
db = sqlite3.connect(self.db_file, **kwargs)sqlite3.OperationalError: unable to open database file 
Traceback (most recent call last):


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/app.py", line 2446, in wsgi_app

response = self.full_dispatch_request()


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/app.py", line 1951, in full_dispatch_request

rv = self.handle_user_exception(e)


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/app.py", line 1820, in handle_user_exception

reraise(exc_type, exc_value, tb)


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise

raise value


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/app.py", line 1949, in full_dispatch_request

rv = self.dispatch_request()


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flask/app.py", line 1935, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "/Users/tomburnell/github/news-search-mltopics/api.py", line 37, in topics_predict

tags = predict.getLabel(text);


 "/Users/tomburnell/github/news-search-mltopics/predict.py", line 47, in getLabel

classifier.predict(sentence)


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flair/models/text_classification_model.py", line 155, in predict

scores = self.forward(batch)


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flair/models/text_classification_model.py", line 80, in forward

self.document_embeddings.embed(sentences)


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/flair/embeddings.py", line 2732, in embed

if self.use_word_dropout:


 "/Users/tomburnell/github/news-search-mltopics/venv/lib/python3.6/site-packages/torch/nn/modules/module.py", line 585, in __getattr__

type(self).__name__, name))
AttributeError: 'DocumentRNNEmbeddings' object has no attribute 'use_word_dropout'
