Gradio 5 is out, and there are many improvements.

Nobody has claimed this yet.

Gradio 5 has come out. It has two things which are interesting:
- It's much faster,
- It has a resizable chatbot field.

However, a lot of things changed in it. And while gradio_web_server.py works just fine with it, it produces an inordinate amount of warnings and errors on the logs, due to some breaking changes.

For example:

```python
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/queueing.py", line 625, in process_events
2025-01-24 19:24:48 | ERROR | stderr | response = await route_utils.call_process_api(
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/route_utils.py", line 322, in call_process_api
2025-01-24 19:24:48 | ERROR | stderr | output = await app.get_blocks().process_api(
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/blocks.py", line 2042, in process_api
2025-01-24 19:24:48 | ERROR | stderr | result = await self.call_function(
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/blocks.py", line 1589, in call_function
2025-01-24 19:24:48 | ERROR | stderr | prediction = await anyio.to_thread.run_sync( # type: ignore
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/anyio/to_thread.py", line 56, in run_sync
2025-01-24 19:24:48 | ERROR | stderr | return await get_async_backend().run_sync_in_worker_thread(
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 2177, in run_sync_in_worker_thread
2025-01-24 19:24:48 | ERROR | stderr | return await future
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 859, in run
2025-01-24 19:24:48 | ERROR | stderr | result = context.run(func, *args)
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/utils.py", line 883, in wrapper
2025-01-24 19:24:48 | ERROR | stderr | response = f(*args, **kwargs)
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/fastchat/serve/gradio_web_server.py", line 285, in load_demo
2025-01-24 19:24:48 | ERROR | stderr | return load_demo_single(models, url_params)
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | File "/Users/surak/Devel/FastChat/fastchat/serve/gradio_web_server.py", line 257, in load_demo_single
2025-01-24 19:24:48 | ERROR | stderr | models = context.text_models
2025-01-24 19:24:48 | ERROR | stderr | ^^^^^^^^^^^^^^^^^^^
2025-01-24 19:24:48 | ERROR | stderr | AttributeError: 'list' object has no attribute 'text_models'
```

And

```python
2025-01-24 19:24:59 | ERROR | stderr | /Users/surak/Devel/FastChat/sc_venv_template/venv/lib/python3.11/site-packages/gradio/blocks.py:1775: UserWarning: A function (add_text) returned too many output values (needed: 8, returned: 9). Ignoring extra values.
```

Start with fastchat/serve/gradio_web_server.py, especially load_demo and load_demo_single, then reproduce the reported Gradio 5 logs. Review the Gradio 5 breaking changes affecting this server and verify that the web server works without the reported AttributeError and output-value warnings.

Written by the indexing model from the issue text.