traceback:
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-119-0edcb666e5b6> in <module>
----> 1 learner.split(split_on = list_layers)
/opt/conda/lib/python3.7/site-packages/fastai/basic_train.py in split(self, split_on)
209 "Split the model at `split_on`."
210 if isinstance(split_on,Callable): split_on = split_on(self.model)
--> 211 self.layer_groups = split_model(self.model, split_on)
212 return self
213
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in split_model(model, splits)
186 if isinstance(splits[0], nn.Module):
187 layers = flatten_model(model)
--> 188 idxs = [layers.index(first_layer(s)) for s in splits]
189 return split_model_idx(model, idxs)
190 return [nn.Sequential(*s) for s in splits]
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in <listcomp>(.0)
186 if isinstance(splits[0], nn.Module):
187 layers = flatten_model(model)
--> 188 idxs = [layers.index(first_layer(s)) for s in splits]
189 return split_model_idx(model, idxs)
190 return [nn.Sequential(*s) for s in splits]
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in first_layer(m)
168 def first_layer(m:nn.Module)->nn.Module:
169 "Retrieve first layer in a module `m`."
--> 170 return flatten_model(m)[0]
171
172 def last_layer(m:nn.Module)->nn.Module:
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in <lambda>(m)
164 return children
165
--> 166 flatten_model = lambda m: sum(map(flatten_model,children_and_parameters(m)),[]) if num_children(m) else [m]
167
168 def first_layer(m:nn.Module)->nn.Module:
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in num_children(m)
145 def num_children(m:nn.Module)->int:
146 "Get number of children modules in `m`."
--> 147 return len(children(m))
148
149 def range_children(m:nn.Module)->Iterator[int]:
/opt/conda/lib/python3.7/site-packages/fastai/torch_core.py in children(m)
141 def children(m:nn.Module)->ModuleList:
142 "Get children of `m`."
--> 143 return list(m.children())
144
145 def num_children(m:nn.Module)->int:
AttributeError: 'NoneType' object has no attribute 'children'
Code:
Following the same code with different data: Fastai with 🤗 Transformers (BERT, RoBERTa, ...) | Kaggle
(cell no. 26 onwards)
Why I am getting this error?
versions:
fastai==1.0.57
fastai2==0.0.30
fastavro @ file:///home/conda/feedstock_root/build_artifacts/fastavro_1616266775763/work
fastbook==0.0.16
fastcore==1.3.20
fastprogress==1.0.0
fastrelease==0.1.11
fastrlock==0.6
fasttext==0.9.2
pyfasttext==0.4.6
transformers==2.0.0