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Raise an error for the wrong chat template #2618

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Oct 22, 2024
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Raise an error for the wrong chat template #2618

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4 changes: 4 additions & 0 deletions lmdeploy/serve/async_engine.py
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Original file line number Diff line number Diff line change
Expand Up @@ -455,6 +455,10 @@ async def _get_prompt_input(self,
prompt = chat_template.messages2prompt(prompt,
sequence_start,
tools=tools)
if prompt is None:
raise ValueError(
f'You are using base template to handle chat task. Please specify a `--chat-template` name chosen from `lmdeploy list` if you want to use OpenAI messages input.' # noqa
)
input_ids = self.tokenizer.encode(prompt, add_bos=sequence_start)
return {'prompt': prompt, 'input_ids': input_ids}

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