Cannot load an interface with a load event attached as of gradio 3.50.2

[freddyaboulton]

Describe the bug

If you try to load an interface with a load event using gr.load, it will error.

Have you searched existing issues? 🔎

• I have searched and found no existing issues

Reproduction

df = gr.load("gradio-tests/dataframe_load", src="spaces")

Screenshot

No response

Logs

KeyError                                  Traceback (most recent call last)
Cell In[2], line 1
----> 1 df = gr.load("gradio-tests/dataframe_load", src="spaces")

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/external.py:70, in load(name, src, api_key, hf_token, alias, **kwargs)
     65     warn_deprecation(
     66         "The `api_key` parameter will be deprecated. "
     67         "Please use the `hf_token` parameter going forward."
     68     )
     69     hf_token = api_key
---> 70 return load_blocks_from_repo(
     71     name=name, src=src, hf_token=hf_token, alias=alias, **kwargs
     72 )

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/external.py:109, in load_blocks_from_repo(name, src, hf_token, alias, **kwargs)
    104         warnings.warn(
    105             """You are loading a model/Space with a different access token than the one you used to load a previous model/Space. This is not recommended, as it may cause unexpected behavior."""
    106         )
    107     Context.hf_token = hf_token
--> 109 blocks: gradio.Blocks = factory_methods[src](name, hf_token, alias, **kwargs)
    110 return blocks

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/external.py:505, in from_spaces(space_name, hf_token, alias, **kwargs)
    498 if kwargs:
    499     warnings.warn(
    500         "You cannot override parameters for this Space by passing in kwargs. "
    501         "Instead, please load the Space as a function and use it to create a "
    502         "Blocks or Interface locally. You may find this Guide helpful: "
    503         "https://gradio.app/using_blocks_like_functions/"
    504     )
--> 505 return from_spaces_blocks(space=space_name, hf_token=hf_token)

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/external.py:511, in from_spaces_blocks(space, hf_token)
    509 client = Client(space, hf_token=hf_token)
    510 predict_fns = [endpoint._predict_resolve for endpoint in client.endpoints]
--> 511 return gradio.Blocks.from_config(client.config, predict_fns, client.src)

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/blocks.py:793, in Blocks.from_config(cls, config, fns, root_url)
    791 _targets = dependency.pop("targets")
    792 trigger = dependency.pop("trigger", None)
--> 793 targets = [
    794     getattr(
    795         original_mapping[
    796             target if isinstance(target, int) else target[0]
    797         ],
    798         trigger if isinstance(target, int) else target[1],
    799     )
    800     for target in _targets
    801 ]
    802 dependency.pop("backend_fn")
    803 dependency.pop("documentation", None)

File ~/miniconda3/envs/blank/lib/python3.10/site-packages/gradio/blocks.py:795, in <listcomp>(.0)
    791 _targets = dependency.pop("targets")
    792 trigger = dependency.pop("trigger", None)
    793 targets = [
    794     getattr(
--> 795         original_mapping[
    796             target if isinstance(target, int) else target[0]
    797         ],
    798         trigger if isinstance(target, int) else target[1],
    799     )
    800     for target in _targets
    801 ]
    802 dependency.pop("backend_fn")
    803 dependency.pop("documentation", None)

KeyError: None

System Info

Gradio Environment Information:
------------------------------
Operating System: Darwin
gradio version: 3.50.2
gradio_client version: 0.6.1

------------------------------------------------
gradio dependencies in your environment:

aiofiles: 23.2.1
altair: 5.1.2
fastapi: 0.103.2
ffmpy: 0.3.1
gradio-client==0.6.1 is not installed.
httpx: 0.25.0
huggingface-hub: 0.18.0
importlib-resources: 6.1.0
jinja2: 3.1.2
markupsafe: 2.1.3
matplotlib: 3.8.0
numpy: 1.26.1
orjson: 3.9.9
packaging: 23.2
pandas: 2.1.1
pillow: 10.1.0
pydantic: 1.10.13
pydub: 0.25.1
python-multipart: 0.0.6
pyyaml: 6.0.1
requests: 2.31.0
semantic-version: 2.10.0
typing-extensions: 4.8.0
uvicorn: 0.23.2
websockets: 11.0.3
authlib; extra == 'oauth' is not installed.
itsdangerous; extra == 'oauth' is not installed.


gradio_client dependencies in your environment:

fsspec: 2023.9.2
httpx: 0.25.0
huggingface-hub: 0.18.0
packaging: 23.2
requests: 2.31.0
typing-extensions: 4.8.0
websockets: 11.0.3

Severity

I can work around it

[freddyaboulton]

Not an issue on 5.0