bug: Error in sending post request for bentoml container service

[hahmad2008]

Describe the bug

After building openllm to generate service and runner, then run the docker image as following:

Server:

$ docker run  --rm --gpus all -p 3000:3000 -it  mymodel-service:12345  start-runner-server --runner-name llm-mistral-runner

Starting RunnerServer from "/home/bentoml/bento" running on http://0.0.0.0:3000 (Press CTRL+C to quit)
Starting RunnerServer from "/home/bentoml/bento" running on http://0.0.0.0:3000 (Press CTRL+C to quit)
.......
(RayWorkerVllm pid=559) INFO 02-13 19:58:42 model_runner.py:547] Graph capturing finished in 35 secs.

Client:

• to send requests to the service: i got this error!!! Please could you help me in retrieving requests to the service!

$ curl -X 'POST'     'http://localhost:3000/generate_iterator'     -H 'accept: application/json'    -H 'Content-Type: application/json'     -d '{
    "prompt": "Explain superconductors like Im five years old"}'


Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/http/traffic.py", line 26, in __call__
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/opentelemetry/instrumentation/asgi/__init__.py", line 596, in __call__
    await self.app(scope, otel_receive, otel_send)
  File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/http/instruments.py", line 252, in __call__
    await self.app(scope, receive, wrapped_send)
  File "/usr/local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 74, in app
    response = await func(request)
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/runner_app.py", line 295, in _request_handler
    arg_num = int(request.headers["args-number"])
                  ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/starlette/datastructures.py", line 565, in __getitem__
    raise KeyError(key)
KeyError: 'args-number'

During handling of the above exception, another exception occurred:

  + Exception Group Traceback (most recent call last):
  |   File "/usr/local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
  |     await self.app(scope, receive, _send)
  |   File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/http/traffic.py", line 23, in __call__
  |     async with anyio.create_task_group():
  |   File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 678, in __aexit__
  |     raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/http/traffic.py", line 26, in __call__
    |     await self.app(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/opentelemetry/instrumentation/asgi/__init__.py", line 596, in __call__
    |     await self.app(scope, otel_receive, otel_send)
    |   File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/http/instruments.py", line 252, in __call__
    |     await self.app(scope, receive, wrapped_send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    |     await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    |     raise exc
    |   File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    |     await app(scope, receive, sender)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    |     await self.middleware_stack(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    |     await route.handle(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    |     await self.app(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    |     await wrap_app_handling_exceptions(app, request)(scope, receive, send)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    |     raise exc
    |   File "/usr/local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    |     await app(scope, receive, sender)
    |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 74, in app
    |     response = await func(request)
    |                ^^^^^^^^^^^^^^^^^^^
    |   File "/usr/local/lib/python3.11/site-packages/bentoml/_internal/server/runner_app.py", line 295, in _request_handler
    |     arg_num = int(request.headers["args-number"])
    |                   ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
    |   File "/usr/local/lib/python3.11/site-packages/starlette/datastructures.py", line 565, in __getitem__
    |     raise KeyError(key)
    | KeyError: 'args-number'
    +------------------------------------

To reproduce

No response

Logs

No response

Environment

$ bentoml -v
bentoml, version 1.1.11

$openllm -v
openllm, 0.4.45.dev2 (compiled: False)
Python (CPython) 3.11.7

System information (Optional)

No response

[hahmad2008]

@aarnphm @bojiang could you please check?