[MONAI Bundle] Very long errors during config instantiation - Clean up raised errors

[surajpaib]

Is your feature request related to a problem? Please describe.
When there is an error in the monai bundle config during instantiation, and the config is large, the RuntimeError ends up being extremely long.
This is counterproductive for debugging and pollutes the terminal with uninformative error messages.

The root cause of this looks to be the RuntimeError messages generated here:

• MONAI/monai/bundle/config_item.py

  Line 295 in ff43028

  raise RuntimeError(f"Failed to instantiate {self}") from e

• MONAI/monai/utils/module.py

  Line 274 in ff43028

  raise RuntimeError(

To Reproduce
Run any relatively large configuration with a wrongly configured argument, and this will occur.
Attached is an example config and the error log below.

The command run for the bundle to run is
python -m monai.bundle run system --config_file config.yaml

error_log.txt
config.json [YAML renamed to JSON as github doesn't allow uploading YAML]

Describe the solution you'd like
A clear and concise error message would be more informative.

I have the following suggestions:

1. Remove the RuntimeError raised in ConfigComponent as the instantiate call will already raise it. Remove this basically:

   MONAI/monai/bundle/config_item.py

   Line 295 in ff43028

   raise RuntimeError(f"Failed to instantiate {self}") from e

2. It would be ideal if the RuntimeError raised in

   MONAI/monai/utils/module.py

   Line 274 in ff43028

   raise RuntimeError(

   shows only the __path and not the full kwargs by default. Maybe this could be moved into debug mode instead?

[surajpaib]

I'm happy to send a PR for this @KumoLiu
Let me know

[KumoLiu]

Hi @surajpaib, sure, welcome for the contribution. Thanks.