RayWorker import error #604
Description
When import vllm I got following error
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/code/vllm/vllm/__init__.py", line 4, in <module>
from vllm.engine.async_llm_engine import AsyncLLMEngine
File "/code/vllm/vllm/engine/async_llm_engine.py", line 7, in <module>
from vllm.engine.llm_engine import LLMEngine
File "/code/vllm/vllm/engine/llm_engine.py", line 9, in <module>
from vllm.engine.ray_utils import initialize_cluster, ray, RayWorker
ImportError: cannot import name 'RayWorker' from 'vllm.engine.ray_utils'
It seems ray requires pandas I haven't installed it.