vllm - 💡(How to fix) Fix [Bug]: DeepSeek V4 Flash Model Output is Garbled

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🐛 Describe the bug

Mirror version: vllm/vllm-openai:v0.21.0
Execution parameters: --enable-prefix-caching --trust-remote-code --enable-auto-tool-choice --tensor-parallel-size 8 --max-model-len 8192 --tokenizer-mode deepseek_v4 --tool-call-parser deepseek_v4 --kv-cache-dtype fp8 --disable-custom-all-reduce

Output status:

<img width="1255" height="545" alt="Image" src="https://github.com/user-attachments/assets/358c207e-21cc-43a3-8361-674c3b248ae2" />

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vllm - 💡(How to fix) Fix [Bug]: DeepSeek V4 Flash Model Output is Garbled