[BUG/Help] <title>微调后为什么聊着聊着说我chatbot为空

[LeoQianQY]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

微调后我正常问答两句后，再输入一句话后，之前对话的所有内容和聊天框都没了，然后这时候再输入随便一句话，就报错
'NoneType' object has no attribute 'append'，跟微调的语料的语句长短会有关系吗？因为我没有改过训练的source_length什么的。

Expected Behavior

No response

Steps To Reproduce

微调后我正常问答两句后，再输入一句话后，之前对话的所有内容和聊天框都没了，然后这时候再输入随便一句话，就报错
'NoneType' object has no attribute 'append'

Environment

- OS: Ubuntu 20.04
- Python: 3.8 
- Transformers: transformers 4.30.2
- PyTorch: torch-2.1.2+cu121
- CUDA Support True

Anything else?

No response

[LeoQianQY]

不是输入为空，是直接chatbot为空，chatbot.append((parse_text(input), ""))
AttributeError: 'NoneType' object has no attribute 'append'