Cannot execute because a node is missing the class_type property.: Node ID '#40'

[OUO963]

Custom Node Testing

• I have tried disabling custom nodes and the issue persists (see how to disable custom nodes if you need help)

Your question

ComfyUI Error Report

Error Details

• Node ID: N/A
• Node Type: N/A
• Exception Type: 提示执行失败
• Exception Message: Cannot execute because a node is missing the class_type property.: Node ID 'Always run node #40'

Stack Trace

Error: Prompt execution failed
    at ComfyApi.queuePrompt (http://127.0.0.1:8004/assets/index-CWzmkThr.js:121273:13)
    at async PromptService.api.queuePrompt (http://127.0.0.1:8004/rgthree/common/prompt_service.js:88:28)
    at async ComfyApp.queuePrompt (http://127.0.0.1:8004/assets/index-CWzmkThr.js:275920:25)
    at async app.queuePrompt (http://127.0.0.1:8004/extensions/rgthree-comfy/rgthree.js:464:24)
    at async function (http://127.0.0.1:8004/assets/GraphView-BXiTAe2v.js:6886:9)
    at async http://127.0.0.1:8004/assets/index-CWzmkThr.js:207325:14
    at async Proxy.execute (http://127.0.0.1:8004/assets/index-CWzmkThr.js:208969:7)
    at async queuePrompt (http://127.0.0.1:8004/assets/GraphView-BXiTAe2v.js:5324:7)

System Information

• ComfyUI Version: 0.3.48
• Arguments: C:\Users\lenovo\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\main.py --user-directory D:\Al\comfyui\comfyui\user --input-directory D:\Al\comfyui\comfyui\input --output-directory D:\Al\comfyui\comfyui\output --front-end-root C:\Users\lenovo\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\web_custom_versions\desktop_app --base-directory D:\Al\comfyui\comfyui --extra-model-paths-config C:\Users\lenovo\AppData\Roaming\ComfyUI\extra_models_config.yaml --log-stdout --listen 127.0.0.1 --port 8004
• OS: nt
• Python Version: 3.12.9 (main, Feb 12 2025, 14:52:31) [MSC v.1942 64 bit (AMD64)]
• Embedded Python: false
• PyTorch Version: 2.7.0+cu128

Devices

• Name: cuda:0 NVIDIA GeForce RTX 4060 Laptop GPU : cudaMallocAsync
  • Type: cuda
  • VRAM Total: 8585216000
  • VRAM Free: 7443841024
  • Torch VRAM Total: 0
  • Torch VRAM Free: 0

Logs

2025-08-03T20:03:40.890233 - Adding extra search path custom_nodes D:\Al\comfyui\comfyui\custom_nodes
2025-08-03T20:03:40.890233 - Adding extra search path download_model_base D:\Al\comfyui\comfyui\models
2025-08-03T20:03:40.890233 - Adding extra search path custom_nodes C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes
2025-08-03T20:03:40.890233 - Setting output directory to: D:\Al\comfyui\comfyui\output
2025-08-03T20:03:40.890233 - Setting input directory to: D:\Al\comfyui\comfyui\input
2025-08-03T20:03:40.890233 - Setting user directory to: D:\Al\comfyui\comfyui\user
2025-08-03T20:03:41.551527 - [START] Security scan2025-08-03T20:03:41.551527 - 
2025-08-03T20:03:43.832378 - [DONE] Security scan2025-08-03T20:03:43.832378 - 
2025-08-03T20:03:45.211053 - ## ComfyUI-Manager: installing dependencies done.2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** ComfyUI startup time:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - 2025-08-03 20:03:45.2112025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** Platform:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - Windows2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** Python version:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - 3.12.9 (main, Feb 12 2025, 14:52:31) [MSC v.1942 64 bit (AMD64)]2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** Python executable:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - D:\Al\comfyui\comfyui\.venv\Scripts\python.exe2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** ComfyUI Path:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** ComfyUI Base Folder Path:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** User directory:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - D:\Al\comfyui\comfyui\user2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** ComfyUI-Manager config path:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - D:\Al\comfyui\comfyui\user\default\ComfyUI-Manager\config.ini2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:45.211053 - ** Log path:2025-08-03T20:03:45.211053 -  2025-08-03T20:03:45.211053 - D:\Al\comfyui\comfyui\user\comfyui.log2025-08-03T20:03:45.211053 - 
2025-08-03T20:03:47.731101 - [ComfyUI-Manager] Failed to restore comfyui-frontend-package
2025-08-03T20:03:47.731101 - expected str, bytes or os.PathLike object, not NoneType
2025-08-03T20:03:47.737176 - 
Prestartup times for custom nodes:
2025-08-03T20:03:47.737176 -    6.8 seconds: C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes\ComfyUI-Manager
2025-08-03T20:03:47.737176 - 
2025-08-03T20:03:49.222163 - Checkpoint files will always be loaded safely.
2025-08-03T20:03:49.385050 - Total VRAM 8188 MB, total RAM 65344 MB
2025-08-03T20:03:49.385050 - pytorch version: 2.7.0+cu128
2025-08-03T20:03:49.385050 - Set vram state to: NORMAL_VRAM
2025-08-03T20:03:49.387357 - Device: cuda:0 NVIDIA GeForce RTX 4060 Laptop GPU : cudaMallocAsync
2025-08-03T20:03:50.820948 - Using pytorch attention
2025-08-03T20:03:52.165863 - Python version: 3.12.9 (main, Feb 12 2025, 14:52:31) [MSC v.1942 64 bit (AMD64)]
2025-08-03T20:03:52.165863 - ComfyUI version: 0.3.48
2025-08-03T20:03:52.226095 - [Prompt Server] web root: C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI\web_custom_versions\desktop_app
2025-08-03T20:03:53.996224 - ### Loading: ComfyUI-Impact-Pack (V8.22)
2025-08-03T20:03:54.175782 - [Impact Pack] Wildcards loading done.
2025-08-03T20:03:54.183276 - ### Loading: ComfyUI-Impact-Subpack (V1.3.5)
2025-08-03T20:03:54.188277 - [Impact Pack/Subpack] Using folder_paths to determine whitelist path: D:\Al\comfyui\comfyui\user\default\ComfyUI-Impact-Subpack\model-whitelist.txt
2025-08-03T20:03:54.189200 - [Impact Pack/Subpack] Ensured whitelist directory exists: D:\Al\comfyui\comfyui\user\default\ComfyUI-Impact-Subpack
2025-08-03T20:03:54.189200 - [Impact Pack/Subpack] Loaded 0 model(s) from whitelist: D:\Al\comfyui\comfyui\user\default\ComfyUI-Impact-Subpack\model-whitelist.txt
2025-08-03T20:03:54.439929 - [Impact Subpack] ultralytics_bbox: D:\Al\comfyui\comfyui\models\ultralytics\bbox
2025-08-03T20:03:54.439929 - [Impact Subpack] ultralytics_segm: D:\Al\comfyui\comfyui\models\ultralytics\segm
2025-08-03T20:03:54.439929 - [Impact Subpack] ultralytics_bbox: D:\Al\comfyui\comfyui\models\ultralytics\bbox
2025-08-03T20:03:54.439929 - [Impact Subpack] ultralytics_segm: D:\Al\comfyui\comfyui\models\ultralytics\segm
2025-08-03T20:03:54.593810 - Added submodule to path: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-quadMoons-nodes\efficiency_nodes2025-08-03T20:03:54.593810 - 
2025-08-03T20:03:59.573727 - ------------------------------------------2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.573727 - �[34mComfyroll Studio v1.76 : �[92m 175 Nodes Loaded�[0m2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.573727 - ------------------------------------------2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.573727 - ** For changes, please see patch notes at https://github.com/Suzie1/ComfyUI_Comfyroll_CustomNodes/blob/main/Patch_Notes.md2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.573727 - ** For help, please see the wiki at https://github.com/Suzie1/ComfyUI_Comfyroll_CustomNodes/wiki2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.573727 - ------------------------------------------2025-08-03T20:03:59.573727 - 
2025-08-03T20:03:59.584377 - �[36;20m[D:\Al\comfyui\comfyui\custom_nodes\comfyui_controlnet_aux] | INFO -> Using ckpts path: D:\Al\comfyui\comfyui\custom_nodes\comfyui_controlnet_aux\ckpts�[0m
2025-08-03T20:03:59.584377 - �[36;20m[D:\Al\comfyui\comfyui\custom_nodes\comfyui_controlnet_aux] | INFO -> Using symlinks: False�[0m
2025-08-03T20:03:59.584377 - �[36;20m[D:\Al\comfyui\comfyui\custom_nodes\comfyui_controlnet_aux] | INFO -> Using ort providers: ['CUDAExecutionProvider', 'DirectMLExecutionProvider', 'OpenVINOExecutionProvider', 'ROCMExecutionProvider', 'CPUExecutionProvider', 'CoreMLExecutionProvider']�[0m
2025-08-03T20:03:59.612308 - DWPose: Onnxruntime with acceleration providers detected2025-08-03T20:03:59.612308 - 
2025-08-03T20:04:02.266768 - �[1;35m
### [START] ComfyUI AlekPet Nodes �[1;34mv1.0.76�[0m�[1;35m ###�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> ArgosTranslateNode: �[93mArgosTranslateCLIPTextEncodeNode, ArgosTranslateTextNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> ChatGLMNode�[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> DeepTranslatorNode: �[93mDeepTranslatorCLIPTextEncodeNode, DeepTranslatorTextNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> ExtrasNode: �[93mPreviewTextNode, HexToHueNode, ColorsCorrectNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> GoogleTranslateNode: �[93mGoogleTranslateCLIPTextEncodeNode, GoogleTranslateTextNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> IDENode: �[93mIDENode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> PainterNode: �[93mPainterNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[92mNode -> PoseNode: �[93mPoseNode�[0m �[92m�[92m[Loading]�[0m�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.266768 - �[1;35m### [END] ComfyUI AlekPet Nodes ###�[0m2025-08-03T20:04:02.266768 - 
2025-08-03T20:04:02.577750 - D:\Al\comfyui\comfyui\.venv\Lib\site-packages\timm\models\layers\__init__.py:48: FutureWarning: Importing from timm.models.layers is deprecated, please import via timm.layers
  warnings.warn(f"Importing from {__name__} is deprecated, please import via timm.layers", FutureWarning)
2025-08-03T20:04:03.068386 - ✨提示词小助手 V1.0.6 �[92m已启动�[0m2025-08-03T20:04:03.073372 - 
2025-08-03T20:04:03.180275 - �[36;20m[D:\Al\comfyui\comfyui\custom_nodes\comfy_mtb] | INFO -> loaded �[96m110�[0m nodes successfuly�[0m
2025-08-03T20:04:03.185565 - �[36;20m[D:\Al\comfyui\comfyui\custom_nodes\comfy_mtb] | INFO -> Some nodes (2) could not be loaded. This can be ignored, but go to http://127.0.0.1:8004/mtb if you want more information.�[0m
2025-08-03T20:04:03.241983 - 
�[36mEfficiency Nodes:�[0m Attempting to add Control Net options to the 'HiRes-Fix Script' Node (comfyui_controlnet_aux add-on)...�[92mSuccess!�[0m2025-08-03T20:04:03.241983 - 
2025-08-03T20:04:03.546656 - 
2025-08-03T20:04:03.546656 - �[92m[rgthree-comfy] Loaded 48 exciting nodes. 🎉�[0m2025-08-03T20:04:03.546656 - 
2025-08-03T20:04:03.546656 - 
2025-08-03T20:04:05.758693 - D:\Al\comfyui\comfyui\.venv\Lib\site-packages\albumentations\check_version.py:147: UserWarning: Error fetching version info <urlopen error _ssl.c:993: The handshake operation timed out>
  data = fetch_version_info()
2025-08-03T20:04:05.853663 - Please 'pip install xformers'2025-08-03T20:04:05.853663 - 
2025-08-03T20:04:05.856794 - Please 'pip install apex'2025-08-03T20:04:05.856794 - 
2025-08-03T20:04:05.861297 - Please 'pip install xformers'2025-08-03T20:04:05.861297 - 
2025-08-03T20:04:07.334094 - �[34mWAS Node Suite: �[0mOpenCV Python FFMPEG support is enabled�[0m2025-08-03T20:04:07.334094 - 
2025-08-03T20:04:07.334094 - �[34mWAS Node Suite �[93mWarning: �[0m`ffmpeg_bin_path` is not set in `D:\Al\comfyui\comfyui\custom_nodes\was-node-suite-comfyui\was_suite_config.json` config file. Will attempt to use system ffmpeg binaries if available.�[0m2025-08-03T20:04:07.334094 - 
2025-08-03T20:04:08.535352 - �[34mWAS Node Suite: �[0mFinished.�[0m �[32mLoaded�[0m �[0m220�[0m �[32mnodes successfully.�[0m2025-08-03T20:04:08.535352 - 
2025-08-03T20:04:08.535352 - 
	�[3m�[93m"Don't wait. The time will never be just right."�[0m�[3m - Napoleon Hill�[0m
2025-08-03T20:04:08.535352 - 
2025-08-03T20:04:08.555739 - ### Loading: ComfyUI-Manager (V3.30.4)
2025-08-03T20:04:08.555739 - [ComfyUI-Manager] network_mode: public
2025-08-03T20:04:08.555739 - ### ComfyUI Revision: UNKNOWN (The currently installed ComfyUI is not a Git repository)
2025-08-03T20:04:08.581042 - 
Import times for custom nodes:
2025-08-03T20:04:08.581042 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfyui-portrait-master-zh-cn
2025-08-03T20:04:08.582177 -    0.0 seconds: C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes\websocket_image_save.py
2025-08-03T20:04:08.582332 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfyui_prompt_assistant
2025-08-03T20:04:08.582332 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-quadMoons-nodes
2025-08-03T20:04:08.582835 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfy-image-saver
2025-08-03T20:04:08.582835 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-Custom-Scripts
2025-08-03T20:04:08.584414 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI_essentials
2025-08-03T20:04:08.584918 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\Comfyui-In-Context-Lora-Utils
2025-08-03T20:04:08.584918 -    0.0 seconds: C:\Users\lenovo\AppData\Local\Programs\@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes\ComfyUI-Manager
2025-08-03T20:04:08.584918 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI_Comfyroll_CustomNodes
2025-08-03T20:04:08.584918 -    0.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfy_mtb
2025-08-03T20:04:08.584918 -    0.1 seconds: D:\Al\comfyui\comfyui\custom_nodes\efficiency-nodes-comfyui
2025-08-03T20:04:08.585427 -    0.1 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfyui_controlnet_aux
2025-08-03T20:04:08.585427 -    0.1 seconds: D:\Al\comfyui\comfyui\custom_nodes\comfyui_segment_anything
2025-08-03T20:04:08.585869 -    0.1 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI_LayerStyle
2025-08-03T20:04:08.585869 -    0.1 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-KJNodes
2025-08-03T20:04:08.585869 -    0.2 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-Impact-Pack
2025-08-03T20:04:08.585869 -    0.3 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-Gemini
2025-08-03T20:04:08.585869 -    0.3 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-Impact-Subpack
2025-08-03T20:04:08.585869 -    0.3 seconds: D:\Al\comfyui\comfyui\custom_nodes\rgthree-comfy
2025-08-03T20:04:08.585869 -    0.7 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI_LayerStyle_Advance
2025-08-03T20:04:08.585869 -    0.7 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-Florence2
2025-08-03T20:04:08.586371 -    1.9 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-TeaCache
2025-08-03T20:04:08.586371 -    2.4 seconds: D:\Al\comfyui\comfyui\custom_nodes\SDXL_EcomID_ComfyUI
2025-08-03T20:04:08.586371 -    2.6 seconds: D:\Al\comfyui\comfyui\custom_nodes\was-node-suite-comfyui
2025-08-03T20:04:08.586371 -    2.6 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI_Custom_Nodes_AlekPet
2025-08-03T20:04:08.586371 -    3.0 seconds: D:\Al\comfyui\comfyui\custom_nodes\ComfyUI-VideoHelperSuite
2025-08-03T20:04:08.586575 - 
2025-08-03T20:04:08.834452 - Failed to initialize database. Please ensure you have installed the latest requirements. If the error persists, please report this as in future the database will be required: (sqlite3.OperationalError) unable to open database file
(Background on this error at: https://sqlalche.me/e/20/e3q8)
2025-08-03T20:04:08.845143 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/alter-list.json
2025-08-03T20:04:08.873129 - Starting server

2025-08-03T20:04:08.873129 - To see the GUI go to: http://127.0.0.1:8004
2025-08-03T20:04:08.889577 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/model-list.json
2025-08-03T20:04:09.386706 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
2025-08-03T20:04:09.433548 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json
2025-08-03T20:04:09.455935 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json
2025-08-03T20:04:11.290878 - comfyui-frontend-package not found in requirements.txt
2025-08-03T20:04:11.319905 - JSON file does not exist.2025-08-03T20:04:11.319905 - 
2025-08-03T20:04:11.319905 - JSON file does not exist.2025-08-03T20:04:11.319905 - 
2025-08-03T20:04:12.353786 - comfyui-frontend-package not found in requirements.txt
2025-08-03T20:04:12.364341 - comfyui-frontend-package not found in requirements.txt
2025-08-03T20:04:15.882050 - FETCH ComfyRegistry Data: 5/932025-08-03T20:04:15.882050 - 
2025-08-03T20:04:22.265894 - FETCH ComfyRegistry Data: 10/932025-08-03T20:04:22.265894 - 
2025-08-03T20:04:30.302001 - FETCH ComfyRegistry Data: 15/932025-08-03T20:04:30.302001 - 
2025-08-03T20:04:38.251862 - FETCH ComfyRegistry Data: 20/932025-08-03T20:04:38.251862 - 
2025-08-03T20:04:45.197251 - FETCH ComfyRegistry Data: 25/932025-08-03T20:04:45.197251 - 
2025-08-03T20:04:52.305548 - FETCH ComfyRegistry Data: 30/932025-08-03T20:04:52.306051 - 
2025-08-03T20:04:56.545842 - got prompt
2025-08-03T20:04:56.545842 - invalid prompt: {'type': 'invalid_prompt', 'message': 'Cannot execute because a node is missing the class_type property.', 'details': "Node ID '#40'", 'extra_info': {}}
2025-08-03T20:04:58.505773 - FETCH ComfyRegistry Data: 35/932025-08-03T20:04:58.505773 - 
2025-08-03T20:05:04.756848 - FETCH ComfyRegistry Data: 40/932025-08-03T20:05:04.756848 - 
2025-08-03T20:05:13.704652 - FETCH ComfyRegistry Data: 45/932025-08-03T20:05:13.704652 - 
2025-08-03T20:05:21.140989 - FETCH ComfyRegistry Data: 50/932025-08-03T20:05:21.140989 - 
2025-08-03T20:05:27.703102 - FETCH ComfyRegistry Data: 55/932025-08-03T20:05:27.703102 - 
2025-08-03T20:05:34.748528 - Cannot connect to comfyregistry.2025-08-03T20:05:34.748528 - 
2025-08-03T20:05:34.771109 - nightly_channel: 2025-08-03T20:05:34.771109 - 
2025-08-03T20:05:34.771109 - https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/remote2025-08-03T20:05:34.771109 - 
2025-08-03T20:05:34.771109 - FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json2025-08-03T20:05:34.771109 - 2025-08-03T20:05:35.515972 -  [DONE]2025-08-03T20:05:35.515972 - 
2025-08-03T20:05:35.554911 - [ComfyUI-Manager] All startup tasks have been completed.
2025-08-03T20:08:45.297135 - got prompt
2025-08-03T20:08:45.298140 - invalid prompt: {'type': 'invalid_prompt', 'message': 'Cannot execute because a node is missing the class_type property.', 'details': "Node ID '#40'", 'extra_info': {}}

Attached Workflow

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Additional Context

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[ltdrdata]

Please resolve all missing nodes in the loaded workflow and then execute it.

[github-actions]

This issue is being marked stale because it has not had any activity for 30 days. Reply below within 7 days if your issue still isn't solved, and it will be left open. Otherwise, the issue will be closed automatically.

[christian-byrne]

This issue has been addressed with improved error messaging in frontend v1.39.5 (backend: #12177, frontend: Comfy-Org/ComfyUI_frontend#8511).

The cryptic "Cannot execute because a node is missing the class_type property" error now shows:

• The actual node type (e.g., KSampler, LoadImage) that is missing
• The node's custom title if you renamed it in the workflow
• A hint to install missing custom nodes via ComfyUI Manager

To get the fix: Update frontend to v1.39.5+ or use --front-end-version Comfy-Org/ComfyUI_frontend@1.39.5. ComfyUI Desktop users will receive this in the next stable release (~mid-February 2026).

If the node source shows "Unknown": This happens when the Manager is not installed or the node is not in the registry. You can enable the built-in Manager with --enable-manager, use the legacy Manager UI with --enable-manager --enable-manager-legacy-ui, or install ComfyUI-Manager as a custom node. The node ID in the error message can still help you locate it in the workflow.

Feel free to reopen this issue if the problem persists after updating. Please include your ComfyUI version, frontend version (visible in bottom-right corner), and a screenshot of the error dialog.

For general guidance see https://docs.comfy.org, or contact support@comfy.org for additional help.