Corrected line 2471 from _config.model_type to _config["model_type"]

[Ankush-Balse]

As per line 2467: _config = json.load(f)
In python, since config.json file read is usually a json, it is returned in dictionary format. thus the output of 'json.load(f)' is a <class: dict> object

However line 2471 tries to access the key "model_type" in a wrong manner. _config.model_type throws an error since _config is a 'dict' object. Hence corrected to _config["model_type"]

What does this PR do?

This pr fixes the incorrect use of _config variable

Fixes # (issue)
As per line 2467:

_config = json.load(f)

In python, since config.json file read is usually a json, it is returned in dictionary format. thus the output of 'json.load(f)' is a <class: dict> object

However line 2471 tries to access the key "model_type" in a wrong manner.
Hence _config.model_type will throw an error that

AttributeError: 'dict' object has no attribute 'model_type'

Thus in line 2471, changed _config.model_type to _config["model_type"]

[kylehowells]

This bug breaks loading local fine tuned models. I tried fine tuning gemma3 and it loads fine, but I try and load the fine-tuned version from my local file system and it crashes complaining about AttributeError: 'dict' object has no attribute 'model_type' on this line. Tested this patch and it fixes my problem. Thanks for the patch! Hope this is merged soon!

[ArthurZucker]

Yes the fix is coming sorry everyone!