AttributeError(AttributeError: ‘DynamicCache‘ object has no attribute ‘get_max_length‘. Did you mean

最新推荐文章于 2025-10-21 17:50:43 发布

原创最新推荐文章于 2025-10-21 17:50:43 发布 · 4.2k 阅读

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#python #深度学习 #开发语言 #AI作画 #linux #运维

故障现象：

新装系统运行comfyui时出现提示：
!!! Exception during processing !!! 'DynamicCache' object has no attribute 'get_max_length'
Traceback (most recent call last):
  File "/home/chawk/ComfyUI/execution.py", line 327, in execute
    output_data, output_ui, has_subgraph = get_output_data(obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/home/chawk/ComfyUI/execution.py", line 202, in get_output_data
    return_values = _map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/home/chawk/ComfyUI/execution.py", line 174, in _map_node_over_list
    process_inputs(input_dict, i)
  File "/home/chawk/ComfyUI/execution.py", line 163, in process_inputs
    results.append(getattr(obj, func)(**inputs))
  File "/home/chawk/ComfyUI/custom_nodes/ComfyUI_LayerStyle_Advance/py/phi_nodes.py", line 124, in phi_prompt
    generate_ids = phi_model.model.generate(
  File "/home/chawk/miniconda3/envs/comfyui/lib/python3.10/site-packages/torch/utils/_contextlib.py", line 116, in decorate_context
    return func(*args, **kwargs)
  File "/home/chawk/miniconda3/envs/comfyui/lib/python3.10/site-packages/transformers/generation/utils.py", line 2223, in generate
    result = self._sample(
  File "/home/chawk/miniconda3/envs/comfyui/lib/python3.10/site-packages/transformers/generation/utils.py", line 3204, in _sample
    model_inputs = self.prepare_inputs_for_generation(input_ids, **model_kwargs)
  File "/home/chawk/.cache/huggingface/modules/transformers_modules/Phi-3.5-vision-instruct/modeling_phi3_v.py", line 1661, in prepare_inputs_for_generation
    max_cache_length = past_key_values.get_max_length()
  File "/home/chawk/miniconda3/envs/comfyui/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1928, in __getattr__
    raise AttributeError(
AttributeError: 'DynamicCache' object has no attribute 'get_max_length'. Did you mean: 'get_seq_length'?

定位过程：

将module.py文件中1928做相应的修改，故障依旧，同时该文件的相应位置又恢复为get_max_length，

经分析，应该是DynamicCache引发的，定位DynamicCache在transformers中的定义

解决方案：

查看transformers版本为最新版本4.49.0

属于transformers版本过新，产生的不兼容

将其版本降为4.48.0，故障消失