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amazon-science / chronos-forecasting

Chronos: Pretrained (Language) Models for Probabilistic Time Series Forecasting
https://arxiv.org/abs/2403.07815
Apache License 2.0
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ValueError: `decoder_start_token_id` or `bos_token_id` has to be defined for encoder-decoder generation, cant get Chronos to run today #76

Closed emitby closed 1 month ago

emitby commented 1 month ago

Yesterday Chronos was working great, today for some reason its throwing this error, even with the sample code with the airline passenger data:

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

Chronos is throwing the same error for both AWS Sagemaker in Jupyter Lab and also ML-Azure, so the error seems to be platform independent.

thanks,

lostella commented 1 month ago

Hi @emitby, thanks for opening the issue. This seems a problem with the recent transformers 4.41. Solution is to downgrade to 4.40 for now, while we look into this deeper.

lostella commented 1 month ago

@emitby #77 fixed this. On a fresh environment, the README instructions will now work. On existing environments, one should ensure to have transformers<4.41 (e.g. pip install transformers<4.41).

abdulfatir commented 1 month ago

Opened an issue in transformers: https://github.com/huggingface/transformers/issues/30892