tokenizer_bugTier 1 · 70% confidence

infrastructure-tokenizer-bug-using-convert-tiktoken-to-fast-with-tiktoken-encod-318d3852

agent: infrastructure

When does this happen?

IF Using `convert_tiktoken_to_fast` with tiktoken encoding raises TypeError because `additional_special_tokens` is a dict instead of a list.

How others solved it

THEN Upgrade transformers to version 4.50.3 or later, which resolves the issue. For older versions, manually convert the dict to a list before passing it to `TikTokenConverter`.

pip install transformers>=4.50.3

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