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flan-t5-xxl

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from transformers import T5Tokenizer, T5ForConditionalGeneration

tokenizer = T5Tokenizer.from_pretrained("google/flan-t5-xxl")
model = T5ForConditionalGeneration.from_pretrained("google/flan-t5-xxl", device_map="auto")
input_ids = tokenizer("summarize: studies have shown that owning a dog is good for you ", return_tensors="pt").input_ids # Batch size 1
outputs = model.generate(input_ids)
print(tokenizer.decode(outputs[0]))

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---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-11-c7dcdc6785c6> in <module>()
      1 input_ids = tokenizer("summarize: studies have shown that owning a dog is good for you ", return_tensors="pt").input_ids  # Batch size 1
----> 2 outputs = model.generate(input_ids)
      3 print(tokenizer.decode(outputs[0]))

3 frames
/usr/local/lib/python3.7/dist-packages/transformers/generation_utils.py in _get_decoder_start_token_id(self, decoder_start_token_id, bos_token_id)
    569             return self.config.decoder.bos_token_id
    570         raise ValueError(
--> 571             "`decoder_start_token_id` or `bos_token_id` has to be defined for encoder-decoder generation."
    572         )
    573 

ValueError: `decoder_start_token_id` or `bos_token_id` has to be defined for encoder-decoder generation.