[Bug] add_worker API no response

[nannaer]

Checklist

• 1. I have searched related issues but cannot get the expected help.
• 2. The bug has not been fixed in the latest version.
• 3. Please note that if the bug-related issue you submitted lacks corresponding environment info and a minimal reproducible demo, it will be challenging for us to reproduce and resolve the issue, reducing the likelihood of receiving feedback.
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Describe the bug

'test_2_add_and_remove_worker' failed , can not use add_worker and remove_worker, such as ' curl -X POST "127.0.0.1:30000/remove_worker?url=http://127.0.0.1:31000" ', there is no any response or logging even in debug mode,

Reproduction

python -m sglang_router.launch_server --model-path /mnt/140/llama3/Meta-Llama-3-8B-Instruct --dp-size 4 --router-verbose
curl -X POST "127.0.0.1:30000/remove_worker?url=http://127.0.0.1:31000
curl -X POST "127.0.0.1:30000/add_worker?url=http://127.0.0.1:31001

python test_launch_server.py

Environment

Python: 3.10.15 (main, Oct 3 2024, 07:27:34) [GCC 11.2.0]
CUDA available: True
GPU 0,1,2,3,4,5,6,7: NVIDIA A100-SXM4-80GB