Error loading D:\ComfyUI\custom_nodes\ComfyUI-RMBG\py\AILab_SAM2Segment.py: No module named 'sam2'

[Amazon90]

···
[START] Security scan
[DONE] Security scan

ComfyUI-Manager: installing dependencies done.

** ComfyUI startup time: 2026-01-09 13:28:45.258
** Platform: Windows
** Python version: 3.13.9 | packaged by Anaconda, Inc. | (main, Oct 21 2025, 19:09:58) [MSC v.1929 64 bit (AMD64)]
** Python executable: D:\ComfyUI\venv\Scripts\Python.exe
** ComfyUI Path: D:\ComfyUI
** ComfyUI Base Folder Path: D:\ComfyUI
** User directory: D:\ComfyUI\user
** ComfyUI-Manager config path: D:\ComfyUI\user__manager\config.ini
** Log path: D:\ComfyUI\user\comfyui.log
[SAM3DBody] Running prestartup script...
[SAM3DBody] Skipped 4 existing asset file(s)
[SAM3DBody] Prestartup script completed

Prestartup times for custom nodes:
0.0 seconds: D:\ComfyUI\custom_nodes\rgthree-comfy
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Easy-Use
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-SAM3DBody
13.1 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Manager

Checkpoint files will always be loaded safely.
Total VRAM 12282 MB, total RAM 16106 MB
pytorch version: 2.9.0+cu130
xformers version: 0.0.33+c2407a6.d20251023
Enabled fp16 accumulation.
Set vram state to: NORMAL_VRAM
Device: cuda:0 NVIDIA GeForce RTX 4070 Ti : cudaMallocAsync
Using async weight offloading with 2 streams
Enabled pinned memory 7247.0
working around nvidia conv3d memory bug.
Found comfy_kitchen backend cuda: {'available': True, 'disabled': False, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'scaled_mm_nvfp4']}
Found comfy_kitchen backend triton: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8']}
Found comfy_kitchen backend eager: {'available': True, 'disabled': False, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'scaled_mm_nvfp4']}
Using sage attention
Python version: 3.13.9 | packaged by Anaconda, Inc. | (main, Oct 21 2025, 19:09:58) [MSC v.1929 64 bit (AMD64)]
ComfyUI version: 0.8.2
ComfyUI frontend version: 1.36.13
[Prompt Server] web root: D:\ComfyUI\venv\Lib\site-packages\comfyui_frontend_package\static
[ComfyUI-Easy-Use] server: v1.3.6 Loaded
[ComfyUI-Easy-Use] web root: D:\ComfyUI\custom_nodes\ComfyUI-Easy-Use\web_version/v2 Loaded
ComfyUI-GGUF: Allowing full torch compile

Loading: ComfyUI-Manager (V3.39.2)

[ComfyUI-Manager] network_mode: public
[ComfyUI-Manager] ComfyUI per-queue preview override detected (PR #11261). Manager's preview method feature is disabled. Use ComfyUI's --preview-method CLI option or 'Settings > Execution > Live preview method'.

ComfyUI Version: v0.8.2-9-g6207f86c | Released on '2026-01-08'

======================================== ComfyUI-nunchaku Initialization ========================================
Nunchaku version: 1.1.0
ComfyUI-nunchaku version: 1.1.0
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/alter-list.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/model-list.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json
[ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
'nunchaku_versions.json' not found. Node will start in minimal mode. Use 'update node' to fetch versions.

Error loading D:\ComfyUI\custom_nodes\ComfyUI-RMBG\py\AILab_SAM2Segment.py: No module named 'sam2'
D:\ComfyUI\venv\Lib\site-packages\torch\backends_init_.py:46: UserWarning: Please use the new API settings to control TF32 behavior, such as torch.backends.cudnn.conv.fp32_precision = 'tf32' or torch.backends.cuda.matmul.fp32_precision = 'ieee'. Old settings, e.g, torch.backends.cuda.matmul.allow_tf32 = True, torch.backends.cudnn.allow_tf32 = True, allowTF32CuDNN() and allowTF32CuBLAS() will be deprecated after Pytorch 2.9. Please see https://pytorch.org/docs/main/notes/cuda.html#tensorfloat-32-tf32-on-ampere-and-later-devices (Triggered internally at C:\actions-runner_work\pytorch\pytorch\pytorch\aten\src\ATen\Context.cpp:85.)
self.setter(val)
[ComfyUI-RMBG] v3.0.0 | 38 nodes Loaded
[SAM3DBody] Initializing ComfyUI-SAM3DBody custom nodes...
[SAM3DBody] Found Blender: D:\ComfyUI\custom_nodes\ComfyUI-SAM3DBody\lib\blender\blender-4.2.3-windows-x64\blender.exe
[SAM3DBody] [OK] Loaded 16 node(s)
[SAM3DBody] - LoadSAM3DBodyModel
[SAM3DBody] - SAM3DBodyAddMeshToSkeleton
[SAM3DBody] - SAM3DBodyExportFBX
[SAM3DBody] - SAM3DBodyExportMesh
[SAM3DBody] - SAM3DBodyExportMultipleFBX
[SAM3DBody] - SAM3DBodyGetVertices
[SAM3DBody] - SAM3DBodyLoadMesh
[SAM3DBody] - SAM3DBodyLoadSkeleton
[SAM3DBody] - SAM3DBodyPreviewRiggedMesh
[SAM3DBody] - SAM3DBodyPreviewSkeleton
[SAM3DBody] - SAM3DBodyProcess
[SAM3DBody] - SAM3DBodyProcessAdvanced
[SAM3DBody] - SAM3DBodyProcessMultiple
[SAM3DBody] - SAM3DBodySaveSkeleton
[SAM3DBody] - SAM3DBodySelectMesh
[SAM3DBody] - SAM3DBodyVisualize
[SAM3DBody] Registered server routes:
[SAM3DBody] POST /sam3d/save_glb
[SAM3DBody] POST /sam3d/export_posed_fbx
[SAM3DBody] GET /sam3d/mesh_files
[SAM3DBody] [OK] Server routes registered
[SAM3DBody] Initialization complete
⚡ SeedVR2 optimizations check: SageAttention ✅ | Flash Attention ✅ | Triton ✅
🔧 Conv3d workaround active: PyTorch 2.9.0, cuDNN 91200 (fixing VAE 3x memory bug)
📊 Initial CUDA memory: 10.71GB free / 11.99GB total
[D:\ComfyUI\custom_nodes\comfyui_controlnet_aux] | INFO -> Using ckpts path: D:\ComfyUI\custom_nodes\comfyui_controlnet_aux\ckpts
[D:\ComfyUI\custom_nodes\comfyui_controlnet_aux] | INFO -> Using symlinks: False
[D:\ComfyUI\custom_nodes\comfyui_controlnet_aux] | INFO -> Using ort providers: ['CUDAExecutionProvider', 'DirectMLExecutionProvider', 'OpenVINOExecutionProvider', 'ROCMExecutionProvider', 'MIGraphXExecutionProvider', 'CPUExecutionProvider', 'CoreMLExecutionProvider']
DWPose: Onnxruntime with acceleration providers detected

[rgthree-comfy] Loaded 48 exciting nodes. 🎉

[rgthree-comfy] ComfyUI's new Node 2.0 rendering may be incompatible with some rgthree-comfy nodes and features, breaking some rendering as well as losing the ability to access a node's properties (a vital part of many nodes). It also appears to run MUCH more slowly spiking CPU usage and causing jankiness and unresponsiveness, especially with large workflows. Personally I am not planning to use the new Nodes 2.0 and, unfortunately, am not able to invest the time to investigate and overhaul rgthree-comfy where needed. If you have issues when Nodes 2.0 is enabled, I'd urge you to switch it off as well and join me in hoping ComfyUI is not planning to deprecate the existing, stable canvas rendering all together.

Import times for custom nodes:
0.0 seconds: D:\ComfyUI\custom_nodes\websocket_image_save.py
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI_Simple_Qwen3-VL-gguf
0.0 seconds: D:\ComfyUI\custom_nodes\cg-use-everywhere
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Inpaint-CropAndStitch
0.0 seconds: D:\ComfyUI\custom_nodes\comfy-portal-endpoint
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-GGUF
0.0 seconds: D:\ComfyUI\custom_nodes\Comfyui_TTP_Toolset
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-EulerDiscreteScheduler
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Custom-Scripts
0.0 seconds: D:\ComfyUI\custom_nodes\ComfyUI-KJNodes
0.0 seconds: D:\ComfyUI\custom_nodes\rgthree-comfy
0.0 seconds: D:\ComfyUI\custom_nodes\Comfyui-SecNodes
0.1 seconds: D:\ComfyUI\custom_nodes\comfyui_controlnet_aux
0.1 seconds: D:\ComfyUI\custom_nodes\ComfyUI_LayerStyle_Advance
0.2 seconds: D:\ComfyUI\custom_nodes\ComfyUI_LayerStyle
0.2 seconds: D:\ComfyUI\custom_nodes\ComfyUI-SAM3DBody
0.2 seconds: D:\ComfyUI\custom_nodes\ComfyUI-VideoHelperSuite
0.2 seconds: D:\ComfyUI\custom_nodes\ComfyUI-SeedVR2_VideoUpscaler
0.4 seconds: D:\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper
0.5 seconds: D:\ComfyUI\custom_nodes\ComfyUI-RMBG
0.7 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Manager
1.9 seconds: D:\ComfyUI\custom_nodes\ComfyUI-nunchaku
5.4 seconds: D:\ComfyUI\custom_nodes\ComfyUI-Easy-Use

Context impl SQLiteImpl.
Will assume non-transactional DDL.
Assets scan(roots=['models']) completed in 0.048s (created=4, skipped_existing=86, total_seen=90)
Starting server

To see the GUI go to: http://127.0.0.1:8188
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /extensions/core/groupNode.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /extensions/core/widgetInputs.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
FETCH ComfyRegistry Data: 5/118
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui/components/button.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
[DEPRECATION WARNING] Detected import of deprecated legacy API: /scripts/ui/components/buttonGroup.js. This is likely caused by a custom node extension using outdated APIs. Please update your extensions or contact the extension author for an updated version.
FETCH ComfyRegistry Data: 10/118
FETCH ComfyRegistry Data: 15/118
FETCH ComfyRegistry Data: 20/118
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FETCH ComfyRegistry Data: 115/118
FETCH ComfyRegistry Data [DONE]
[ComfyUI-Manager] default cache updated: https://api.comfy.org/nodes
FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json [DONE]
[ComfyUI-Manager] All startup tasks have been completed.
···

[1038lab]

We recently restructured the entire repository file layout.

Please try deleting the ComfyUI-RMBG folder from your custom_nodes directory and reinstalling it again from scratch.
This should resolve the sam2 import error and related path issues.

Let us know if the problem still occurs after a fresh install.

[Amazon90]

We recently restructured the entire repository file layout.

Please try deleting the ComfyUI-RMBG folder from your custom_nodes directory and reinstalling it again from scratch. This should resolve the sam2 import error and related path issues.

Let us know if the problem still occurs after a fresh install.

I fixed the issue by using this command: pip install git+https://github.com/facebookresearch/sam2.git

[changpd25-cell]

Node import failed. Don't know how to fix it.