ModuleNotFoundError: No module named 'spacy.lemmatizer' on executing fastai's load_learner

[kumuda0]

How to reproduce the behaviour

from fastai.learner import load_learner
classifier = load_learner(os.path.join(path_to_file, "model.pth"))

Error

classifier = load_learner(os.path.join(path, "model.pth"))
File "/usr/local/lib/python3.7/site-packages/fastai/learner.py", line 384, in load_learner
res = torch.load(fname, map_location='cpu' if cpu else None, pickle_module=pickle_module)
File "/usr/local/lib/python3.7/site-packages/torch/serialization.py", line 607, in load
return _load(opened_zipfile, map_location, pickle_module, **pickle_load_args)
File "/usr/local/lib/python3.7/site-packages/torch/serialization.py", line 882, in _load
result = unpickler.load()
File "/usr/local/lib/python3.7/site-packages/torch/serialization.py", line 875, in find_class
return super().find_class(mod_name, name)
ModuleNotFoundError: No module named 'spacy.lemmatizer'

Your Environment

• fastai version: 2.4
• spaCy version: 3.4.0
• Platform: Linux-4.4.0-1128-aws-x86_64-with-debian-9.13
• Python version: 3.7.11
• Pipelines: en_core_web_sm (3.4.0), fr_core_news_sm (3.4.0), es_core_news_sm (3.4.0), de_core_news_sm (3.4.0), it_core_news_sm (3.4.0), en_core_web_trf (3.4.0)

There are suggestions to downgrade the spacy version to fix the issue. But I appreciate a solution with no downgrading of spacy or python.

[polm]

Since this seems to be a usage question and not a bug report, I'll move it to Discussions.