Flair: Error while loading the ner model

[Ranjitsahu]

I am trying to run flair in my Mac. I have installed python and other related stuff as per your documentation. The problem I am facing is while loading the ner model .

Below is the stack trace. I have tried both python 3.6 and 3.7.

tagger = SequenceTagger.load('ner')
2020-01-18 00:16:34,804 https://s3.eu-central-1.amazonaws.com/alan-nlp/resources/models-v0.4/NER-conll03-english/en-ner-conll03-v0.4.pt not found in cache, downloading to /var/folders/r9/wtxzwffs70bcqh_mkfy99kxw0000gp/T/tmpktexcmjd
100%|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 432197603/432197603 [02:50<00:00, 2539653.20B/s]
2020-01-18 00:19:25,565 copying /var/folders/r9/wtxzwffs70bcqh_mkfy99kxw0000gp/T/tmpktexcmjd to cache at /Users/u0095963/.flair/models/en-ner-conll03-v0.4.pt
2020-01-18 00:19:26,086 removing temp file /var/folders/r9/wtxzwffs70bcqh_mkfy99kxw0000gp/T/tmpktexcmjd
2020-01-18 00:19:26,115 loading file /Users/u0095963/.flair/models/en-ner-conll03-v0.4.pt
Traceback (most recent call last):
File "", line 1, in
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/flair/nn.py", line 86, in load
model = cls._init_model_with_state_dict(state)
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/flair/models/sequence_tagger_model.py", line 250, in _init_model_with_state_dict
rnn_type=rnn_type,
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/flair/models/sequence_tagger_model.py", line 201, in __init__
self.to(flair.device)
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/module.py", line 425, in to
return self._apply(convert)
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/module.py", line 201, in _apply
module._apply(fn)
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/module.py", line 201, in _apply
module._apply(fn)
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/module.py", line 201, in _apply
module._apply(fn)
[Previous line repeated 1 more time]
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/rnn.py", line 137, in _apply
self._flat_weights = [getattr(self, weight) for weight in self._flat_weights_names]
File "/Users/u0095963/opt/anaconda3/envs/mypython3.6/lib/python3.6/site-packages/torch/nn/modules/module.py", line 576, in __getattr__
type(self).__name__, name))
AttributeError: 'LSTM' object has no attribute '_flat_weights_names'

[jvdzwaan]

I get the same error when I try loading the nl-ner model.

[djstrong]

@jvdzwaan Solution is mentioned above.

[rahulvsharan]

2020-01-21 12:35:26,334 loading file C:\Users\1025289.flair\models\en-pos-ontonotes-v0.4.pt
Traceback (most recent call last):
File ".\stest.py", line 3, in
File "C:\Users\1025289\AppData\Local\Programs\Python\Python37lib\site-packages\torch\nn\modules\module.py", line 201, in _apply
module._apply(fn)
File "C:\Users\1025289\AppData\Local\Programs\Python\Python37lib\site-packages\torch\nn\modules\module.py", line 201, in _apply
module._apply(fn)
File "C:\Users\1025289\AppData\Local\Programs\Python\Python37lib\site-packages\torch\nn\modules\module.py", line 201, in _apply
module._apply(fn)
[Previous line repeated 1 more time]
File "C:\Users\1025289\AppData\Local\Programs\Python\Python37lib\site-packages\torch\nn\modules\rnn.py", line 137, in _apply
self._flat_weights = [getattr(self, weight) for weight in self._flat_weights_names]
File "C:\Users\1025289\AppData\Local\Programs\Python\Python37lib\site-packages\torch\nn\modules\module.py", line 576, in __getattr__
type(self).__name__, name))
AttributeError: 'LSTM' object has no attribute '_flat_weights_names'

Error: started when updated the torch to latest version.
Environment:
PyTorch Version (e.g., 1.0): 1.4.0
OS (e.g., Linux): Windows 10
How you installed PyTorch (conda, pip, source): pip
Build command you used (if compiling from source):
Python version: 3.76
GPU models and configuration:
Any other relevant information:

[alanakbik]

We just released a new flair version that fixes this!