A completions API request with an empty prompt will crash the vllm API server.
The impact is limited based on what model is being served. Serving gpt2 is affected. Most models are not affected, as vllm will prepend tokens to the prompt, avoiding the problematic code.
https://github.com/vllm-project/vllm/commit/e25fee57c2e69161bd261f5986dc5aeb198bbd42