maximum recursion depth exceeded while getting the str of an object

[nianxi]

When I put this image into the workflow and run it, a runtime error occurred.

The error description is as follows:

Could you please help me solve the problem? thank you very much!

ComfyUI Error Report

Error Details

• Node ID: 35
• Node Type: LoadInvSRModels
• Exception Type: RecursionError
• Exception Message: maximum recursion depth exceeded while getting the str of an object

Stack Trace

  File "/app/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 "/app/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 "/app/ComfyUI/execution.py", line 174, in _map_node_over_list
    process_inputs(input_dict, i)

  File "/app/ComfyUI/execution.py", line 163, in process_inputs
    results.append(getattr(obj, func)(**inputs))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/node.py", line 94, in loadmodel
    base_sampler = BaseSampler(configs)
                   ^^^^^^^^^^^^^^^^^^^^

  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/comfyui_invsr_trimmed/sampler_invsr.py", line 42, in __init__
    self.build_model()

  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/comfyui_invsr_trimmed/sampler_invsr.py", line 90, in build_model
    sd_pipe.vae._set_gradient_checkpointing(sd_pipe.vae.encoder, True)

  File "/app/venv/lib64/python3.11/site-packages/diffusers/models/modeling_utils.py", line 1718, in _set_gradient_checkpointing
    logger.debug(f"Setting `gradient_checkpointing={enable}` for '{name}'")
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^

  [Previous line repeated 319 more times]

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in <listcomp>
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in <listcomp>
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2937, in __repr__
    extra_repr = self.extra_repr()
                 ^^^^^^^^^^^^^^^^^

  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/normalization.py", line 316, in extra_repr
    return "{num_groups}, {num_channels}, eps={eps}, " "affine={affine}".format(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

System Information

• ComfyUI Version: 0.3.18
• Arguments: main.py --listen 0.0.0.0 --port 8188
• OS: posix
• Python Version: 3.11.9 (main, Sep 11 2024, 00:00:00) [GCC 11.5.0 20240719 (Red Hat 11.5.0-2)]
• Embedded Python: false
• PyTorch Version: 2.5.1+cu124

Devices

• Name: cuda:0 NVIDIA GeForce RTX 4080 SUPER : cudaMallocAsync
  • Type: cuda
  • VRAM Total: 16852713472
  • VRAM Free: 14686217022
  • Torch VRAM Total: 1811939328
  • Torch VRAM Free: 45998910

Logs

2025-04-16T11:43:19.512090 - You have disabled the safety checker for <class 'diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline'> by passing `safety_checker=None`. Ensure that you abide to the conditions of the Stable Diffusion license and do not expose unfiltered results in services or applications open to the public. Both the diffusers team and Hugging Face strongly recommend to keep the safety filter enabled in all public facing circumstances, disabling it only for use-cases that involve analyzing network behavior or auditing its results. For more information, please have a look at https://github.com/huggingface/diffusers/pull/254 .
2025-04-16T11:43:19.512554 - You have disabled the safety checker for <class 'ComfyUI_InvSR.comfyui_invsr_trimmed.pipeline_stable_diffusion_inversion_sr.StableDiffusionInvEnhancePipeline'> by passing `safety_checker=None`. Ensure that you abide to the conditions of the Stable Diffusion license and do not expose unfiltered results in services or applications open to the public. Both the diffusers team and Hugging Face strongly recommend to keep the safety filter enabled in all public facing circumstances, disabling it only for use-cases that involve analyzing network behavior or auditing its results. For more information, please have a look at https://github.com/huggingface/diffusers/pull/254 .
2025-04-16T11:43:20.265975 - Activating gradient checkpoing for vae...2025-04-16T11:43:20.265995 - 
2025-04-16T11:43:20.328334 - !!! Exception during processing !!! maximum recursion depth exceeded while getting the str of an object
2025-04-16T11:43:20.331939 - Traceback (most recent call last):
  File "/app/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 "/app/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 "/app/ComfyUI/execution.py", line 174, in _map_node_over_list
    process_inputs(input_dict, i)
  File "/app/ComfyUI/execution.py", line 163, in process_inputs
    results.append(getattr(obj, func)(**inputs))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/node.py", line 94, in loadmodel
    base_sampler = BaseSampler(configs)
                   ^^^^^^^^^^^^^^^^^^^^
  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/comfyui_invsr_trimmed/sampler_invsr.py", line 42, in __init__
    self.build_model()
  File "/app/ComfyUI/custom_nodes/ComfyUI_InvSR/comfyui_invsr_trimmed/sampler_invsr.py", line 90, in build_model
    sd_pipe.vae._set_gradient_checkpointing(sd_pipe.vae.encoder, True)
  File "/app/venv/lib64/python3.11/site-packages/diffusers/models/modeling_utils.py", line 1718, in _set_gradient_checkpointing
    logger.debug(f"Setting `gradient_checkpointing={enable}` for '{name}'")
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  [Previous line repeated 319 more times]
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in <listcomp>
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/container.py", line 369, in <listcomp>
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2943, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/module.py", line 2937, in __repr__
    extra_repr = self.extra_repr()
                 ^^^^^^^^^^^^^^^^^
  File "/app/venv/lib64/python3.11/site-packages/torch/nn/modules/normalization.py", line 316, in extra_repr
    return "{num_groups}, {num_channels}, eps={eps}, " "affine={affine}".format(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RecursionError: maximum recursion depth exceeded while getting the str of an object

[ZhongKang97]

same question met

[amebrahimi]

Same here

[BCon21]

same error

[hostmoms]

Use the following commands to solve your problem:

pip install torch==2.1.2+cu121 torchvision==0.16.2+cu121 torchaudio==2.1.2 --index-url https://download.pytorch.org/whl/cu121
pip install xformers==0.0.23.post1

[nianxi]

@hostmoms Thank you for your answer, but installing these libraries will cause version conflicts with many plug-ins, resulting in many nodes being lost and needing to be repaired. Is there a better solution? I used to be able to run this plug-in normally, but it stopped working after April 16, 2025.

[moshikatu]

same error, I used to be able to run this plug-in normally,any better solution?

[yuvraj108c]

Hello all,

The issue occurs only in the latest versions of diffusers.
I've just tested with version 0.32.2 and it works, thus downgrading diffusers is required.

pip install diffusers==0.32.2

[BrettMCoding]

I am using diffusers 0.32.2 and getting this error. Any ideas?

Loading pipeline components...: 100%|████████████████████████████████████████████████████| 5/5 [00:01<00:00,  2.53it/s]
You have disabled the safety checker for <class 'diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline'> by passing `safety_checker=None`. Ensure that you abide to the conditions of the Stable Diffusion license and do not expose unfiltered results in services or applications open to the public. Both the diffusers team and Hugging Face strongly recommend to keep the safety filter enabled in all public facing circumstances, disabling it only for use-cases that involve analyzing network behavior or auditing its results. For more information, please have a look at https://github.com/huggingface/diffusers/pull/254 .
You have disabled the safety checker for <class 'F:\Coding\Resources\ai\comfyui\ComfyUI\custom_nodes\ComfyUI_InvSR.comfyui_invsr_trimmed.pipeline_stable_diffusion_inversion_sr.StableDiffusionInvEnhancePipeline'> by passing `safety_checker=None`. Ensure that you abide to the conditions of the Stable Diffusion license and do not expose unfiltered results in services or applications open to the public. Both the diffusers team and Hugging Face strongly recommend to keep the safety filter enabled in all public facing circumstances, disabling it only for use-cases that involve analyzing network behavior or auditing its results. For more information, please have a look at https://github.com/huggingface/diffusers/pull/254 .
Activating gradient checkpoing for vae...
!!! Exception during processing !!! maximum recursion depth exceeded while getting the str of an object
Traceback (most recent call last):
  File "F:\Coding\Resources\ai\comfyui\ComfyUI\execution.py", line 345, 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 "F:\Coding\Resources\ai\comfyui\ComfyUI\execution.py", line 220, 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 "F:\Coding\Resources\ai\comfyui\ComfyUI\execution.py", line 192, in _map_node_over_list
    process_inputs(input_dict, i)
  File "F:\Coding\Resources\ai\comfyui\ComfyUI\execution.py", line 181, in process_inputs
    results.append(getattr(obj, func)(**inputs))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\ComfyUI\custom_nodes\ComfyUI_InvSR\node.py", line 95, in loadmodel
    base_sampler = BaseSampler(configs)
                   ^^^^^^^^^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\ComfyUI\custom_nodes\ComfyUI_InvSR\comfyui_invsr_trimmed\sampler_invsr.py", line 42, in __init__
    self.build_model()
  File "F:\Coding\Resources\ai\comfyui\ComfyUI\custom_nodes\ComfyUI_InvSR\comfyui_invsr_trimmed\sampler_invsr.py", line 90, in build_model
    sd_pipe.vae._set_gradient_checkpointing(sd_pipe.vae.encoder, True)
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\diffusers\models\modeling_utils.py", line 1718, in _set_gradient_checkpointing
    logger.debug(f"Setting `gradient_checkpointing={enable}` for '{name}'")
                                                   ^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2940, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2940, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2940, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  [Previous line repeated 740 more times]
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2940, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\container.py", line 369, in __repr__
    list_of_reprs = [repr(item) for item in self]
                     ^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2940, in __repr__
    mod_str = repr(module)
              ^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\module.py", line 2934, in __repr__
    extra_repr = self.extra_repr()
                 ^^^^^^^^^^^^^^^^^
  File "F:\Coding\Resources\ai\comfyui\python_embeded\Lib\site-packages\torch\nn\modules\normalization.py", line 316, in extra_repr
    return "{num_groups}, {num_channels}, eps={eps}, " "affine={affine}".format(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RecursionError: maximum recursion depth exceeded while getting the str of an object

Prompt executed in 5.17 seconds