APIError: Invalid response object from API: 'Internal Server Error' (HTTP response code was 500)

[Barry1915]

python -m fastchat.serve.controller
python -m fastchat.serve.vllm_worker --model-path ....../Qwen2___5-7B-Instruct --trust-remote-code --dtype bfloat16
python -m fastchat.serve.openai_api_server --host localhost --port 8000

import openai
openai.api_key = "EMPTY"
openai.api_base = "http://localhost:8000/v1"

model = "Qwen2___5-7B-Instruct"
prompt = "Once upon a time"

create a completion

completion = openai.Completion.create(model=model, prompt=prompt)

# print the completion

print(prompt + completion.choices[0].text)