[Bug]: DeepSeek-V3.2 As of transformers v4.44, default chat template is no longer allowed, so you must provide a chat template if the tokenizer does not define one

[deepblacksky]

Your current environment

vllm:v0.11.2

🐛 Describe the bug

Using vllm to deploy the latest deepseek-v3.2 model
the deployment was successful

vllm server --model /workspace/LLM_Weights/deepseek-ai/DeepSeek-V3.2 --port 40001 --host 0.0.0.0 --trust-remote-code --served-model-name deepseek-v3.2-new --max-model-len 131072 --gpu-memory-utilization 0.95 -dp 8 --enable-expert-parallel --max-num-seqs 256

an error occurred when invoking it

ValueError: As of transformers v4.44, default chat template is no longer allowed, so you must provide a chat template if the tokenizer does not define one.

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[ZKCCZ]

same question
https://huggingface.co/deepseek-ai/DeepSeek-V3.2/discussions/4

[MengyuanHan1]

I guess you can try the V3.2-Exp template

[jeejeelee]

See: #29837

[xlinsz]

V3.2-Exp template seems not working

[chaunceyjiang]

DeepSeek-V3.2

See: vllm-project/recipes#134

@deepblacksky @xlinsz