runtime error

dn't instantiate the backend tokenizer from one of: (1) a `tokenizers` library serialization file, (2) a slow tokenizer instance to convert or (3) an equivalent slow tokenizer class to instantiate and convert. You need to have sentencepiece installed to convert a slow tokenizer to a fast one. Traceback (most recent call last): File "/home/user/app/app.py", line 89, in <module> aggregator = BatchAggregator( File "/home/user/app/aggregate.py", line 74, in __init__ self.init_model(model_name) File "/home/user/app/aggregate.py", line 88, in init_model self.aggregator = self._create_pipeline(model_name) File "/home/user/app/aggregate.py", line 120, in _create_pipeline return pipeline( File "/home/user/.local/lib/python3.10/site-packages/transformers/pipelines/__init__.py", line 931, in pipeline tokenizer = AutoTokenizer.from_pretrained( File "/home/user/.local/lib/python3.10/site-packages/transformers/models/auto/tokenization_auto.py", line 769, in from_pretrained return tokenizer_class_fast.from_pretrained(pretrained_model_name_or_path, *inputs, **kwargs) File "/home/user/.local/lib/python3.10/site-packages/transformers/tokenization_utils_base.py", line 2017, in from_pretrained return cls._from_pretrained( File "/home/user/.local/lib/python3.10/site-packages/transformers/tokenization_utils_base.py", line 2249, in _from_pretrained tokenizer = cls(*init_inputs, **init_kwargs) File "/home/user/.local/lib/python3.10/site-packages/transformers/models/t5/tokenization_t5_fast.py", line 133, in __init__ super().__init__( File "/home/user/.local/lib/python3.10/site-packages/transformers/tokenization_utils_fast.py", line 120, in __init__ raise ValueError( ValueError: Couldn't instantiate the backend tokenizer from one of: (1) a `tokenizers` library serialization file, (2) a slow tokenizer instance to convert or (3) an equivalent slow tokenizer class to instantiate and convert. You need to have sentencepiece installed to convert a slow tokenizer to a fast one.

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