sharegpt dataset convert error

[JJJYmmm]

Reminder

• I have read the above rules and searched the existing issues.

System Info

• llamafactory version: 0.9.2.dev0
• Platform: Linux-5.15.0-131-generic-x86_64-with-glibc2.35
• Python version: 3.10.16
• PyTorch version: 2.6.0+cu126 (GPU)
• Transformers version: 4.49.0.dev0
• Datasets version: 2.21.0
• Accelerate version: 1.0.1
• PEFT version: 0.12.0
• TRL version: 0.9.6
• GPU type: NVIDIA H100 80GB HBM3
• GPU number: 8
• GPU memory: 79.19GB

Reproduction

Just use sharegpt_hyper dataset would cause the error.

[rank0]:   File "/home/xxx/LLaMA-Factory/src/llamafactory/data/aligner.py", line 15
3, in convert_sharegpt                                                                  
[rank0]:     {"role": tag_mapping[message[dataset_attr.role_tag]], "content": message[da
taset_attr.content_tag]}                                                                
[rank0]: KeyError: 'user'

code here, when broken_data = True, it doesn't break and cause key error finally.

Others

No response