[fix bug]The 'input' field is optional

[duhanmin]

The 'input' field is optional. Omitting it in the JSON will cause training errors.
https://llamafactory.readthedocs.io/zh-cn/latest/getting_started/data_preparation.html

[hiyouga]

If you do not provide input in json, you need remove input from the columns in dataset_info, like

LLaMA-Factory/data/dataset_info.json

Lines 314 to 321 in 48a6584

	"openo1_sft": {
	"hf_hub_url": "llamafactory/OpenO1-SFT",
	"ms_hub_url": "llamafactory/OpenO1-SFT",
	"columns": {
	"prompt": "prompt",
	"response": "response"
	}
	},

[duhanmin]

如果你没有input在 json 中提供，则需要input从 dataset_info 中的列中删除，例如

LLaMA-Factory/data/dataset_info.json

Lines 314 to 321 in 48a6584

	"openo1_sft": {
	"hf_hub_url": "llamafactory/OpenO1-SFT",
	"ms_hub_url": "llamafactory/OpenO1-SFT",
	"columns": {
	"prompt": "prompt",
	"response": "response"
	}
	},

There is no 'input' field in my dataset_info
If there is no 'input' in the custom dataset, an error will be reported. You must add 'input="" '