runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 8, in <module> learn_inf = load_learner("20210928-model.pkl") File "/home/user/.local/lib/python3.9/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 "/home/user/.local/lib/python3.9/site-packages/torch/serialization.py", line 607, in load return _load(opened_zipfile, map_location, pickle_module, **pickle_load_args) File "/home/user/.local/lib/python3.9/site-packages/torch/serialization.py", line 882, in _load result = unpickler.load() File "/home/user/.local/lib/python3.9/site-packages/torch/serialization.py", line 875, in find_class return super().find_class(mod_name, name) ModuleNotFoundError: No module named 'spacy.lemmatizer'

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