Prompt execution failed

### Custom Node Testing

- [ ] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

I expected to start running normal to create some pictures but didn t work.

### Actual Behavior

### Steps to Reproduce

I created a unit and some nodes to produce an image, and afterward I added more nodes to generate multiple similar images but from different poses using IPAdapter Advanced. I forgot to connect one node, and when I pressed “Run” it warned me that something wasn’t connected. I connected it, and after that I received this error which no longer specifies what needs to be done. I assume it’s a bug or something like that. I reset it three times and got the same result.

### Debug Logs

```powershell
# ComfyUI Error Report
## Error Details
- **Node ID:** N/A
- **Node Type:** N/A
- **Exception Type:** Prompt execution failed
- **Exception Message:** Prompt outputs failed validation:
## Stack Trace

Error: Prompt execution failed
at ComfyApi.queuePrompt (http://127.0.0.1:8188/assets/index-azSeANjR.js:4:5485)
at async ComfyApp.queuePrompt (http://127.0.0.1:8188/assets/index-azSeANjR.js:253:17414)
at async Proxy.function (http://127.0.0.1:8188/assets/GraphView-CyYDa8uS.js:15:72634)
at async http://127.0.0.1:8188/assets/index-azSeANjR.js:62:267474
at async Proxy.execute (http://127.0.0.1:8188/assets/index-azSeANjR.js:62:286967)
at async queuePrompt (http://127.0.0.1:8188/assets/ComfyQueueButton-BH3dqSji.js:1:3164)

## System Information
- **ComfyUI Version:** 0.7.0
- **Arguments:** ComfyUI\main.py --windows-standalone-build
- **OS:** win32
- **Python Version:** 3.13.9 (tags/v3.13.9:8183fa5, Oct 14 2025, 14:09:13) [MSC v.1944 64 bit (AMD64)]
- **Embedded Python:** true
- **PyTorch Version:** 2.9.1+cu130
## Devices

- **Name:** cuda:0 NVIDIA GeForce RTX 3050 6GB Laptop GPU : cudaMallocAsync
- **Type:** cuda
- **VRAM Total:** 6441926656
- **VRAM Free:** 5404360704
- **Torch VRAM Total:** 0
- **Torch VRAM Free:** 0

## Logs

2026-01-07T11:23:40.686926 - [START] Security scan2026-01-07T11:23:40.686955 -
2026-01-07T11:23:44.980997 - [DONE] Security scan2026-01-07T11:23:44.981015 -
2026-01-07T11:23:45.151114 - ## ComfyUI-Manager: installing dependencies done.2026-01-07T11:23:45.151247 -
2026-01-07T11:23:45.151434 - ** ComfyUI startup time:2026-01-07T11:23:45.151555 - 2026-01-07T11:23:45.151649 - 2026-01-07 11:23:45.1512026-01-07T11:23:45.151738 -
2026-01-07T11:23:45.151832 - ** Platform:2026-01-07T11:23:45.151917 - 2026-01-07T11:23:45.152129 - Windows2026-01-07T11:23:45.152355 -
2026-01-07T11:23:45.152522 - ** Python version:2026-01-07T11:23:45.152679 - 2026-01-07T11:23:45.152782 - 3.13.9 (tags/v3.13.9:8183fa5, Oct 14 2025, 14:09:13) [MSC v.1944 64 bit (AMD64)]2026-01-07T11:23:45.152933 -
2026-01-07T11:23:45.153080 - ** Python executable:2026-01-07T11:23:45.153182 - 2026-01-07T11:23:45.153257 - D:\ComfyUI_windows_portable\python_embeded\python.exe2026-01-07T11:23:45.153387 -
2026-01-07T11:23:45.153489 - ** ComfyUI Path:2026-01-07T11:23:45.153562 - 2026-01-07T11:23:45.153629 - D:\ComfyUI_windows_portable\ComfyUI2026-01-07T11:23:45.153693 -
2026-01-07T11:23:45.153762 - ** ComfyUI Base Folder Path:2026-01-07T11:23:45.153913 - 2026-01-07T11:23:45.154014 - D:\ComfyUI_windows_portable\ComfyUI2026-01-07T11:23:45.154089 -
2026-01-07T11:23:45.154156 - ** User directory:2026-01-07T11:23:45.154218 - 2026-01-07T11:23:45.154279 - D:\ComfyUI_windows_portable\ComfyUI\user2026-01-07T11:23:45.154343 -
2026-01-07T11:23:45.154405 - ** ComfyUI-Manager config path:2026-01-07T11:23:45.154466 - 2026-01-07T11:23:45.154663 - D:\ComfyUI_windows_portable\ComfyUI\user\__manager\config.ini2026-01-07T11:23:45.154727 -
2026-01-07T11:23:45.154787 - ** Log path:2026-01-07T11:23:45.154835 - 2026-01-07T11:23:45.154911 - D:\ComfyUI_windows_portable\ComfyUI\user\comfyui.log2026-01-07T11:23:45.154993 -
2026-01-07T11:23:46.720814 -
Prestartup times for custom nodes:
2026-01-07T11:23:46.721052 - 7.5 seconds: D:\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager
2026-01-07T11:23:46.721206 -
2026-01-07T11:23:58.527351 - Checkpoint files will always be loaded safely.
2026-01-07T11:23:58.701214 - Total VRAM 6144 MB, total RAM 24261 MB
2026-01-07T11:23:58.701613 - pytorch version: 2.9.1+cu130
2026-01-07T11:23:58.704181 - Set vram state to: NORMAL_VRAM
2026-01-07T11:23:58.704683 - Device: cuda:0 NVIDIA GeForce RTX 3050 6GB Laptop GPU : cudaMallocAsync
2026-01-07T11:23:58.729870 - Using async weight offloading with 2 streams
2026-01-07T11:23:58.730289 - Enabled pinned memory 10917.0
2026-01-07T11:23:58.737264 - working around nvidia conv3d memory bug.
2026-01-07T11:24:05.303779 - Using pytorch attention
2026-01-07T11:24:35.961515 - Python version: 3.13.9 (tags/v3.13.9:8183fa5, Oct 14 2025, 14:09:13) [MSC v.1944 64 bit (AMD64)]
2026-01-07T11:24:35.961740 - ComfyUI version: 0.7.0
2026-01-07T11:24:36.018275 - ComfyUI frontend version: 1.35.9
2026-01-07T11:24:36.021616 - [Prompt Server] web root: D:\ComfyUI_windows_portable\python_embeded\Lib\site-packages\comfyui_frontend_package\static
2026-01-07T11:24:38.030607 - Total VRAM 6144 MB, total RAM 24261 MB
2026-01-07T11:24:38.030904 - pytorch version: 2.9.1+cu130
2026-01-07T11:24:38.031535 - Set vram state to: NORMAL_VRAM
2026-01-07T11:24:38.031954 - Device: cuda:0 NVIDIA GeForce RTX 3050 6GB Laptop GPU : cudaMallocAsync
2026-01-07T11:24:38.062901 - Using async weight offloading with 2 streams
2026-01-07T11:24:38.063378 - Enabled pinned memory 10917.0
2026-01-07T11:24:39.013407 - ### Loading: ComfyUI-Manager (V3.39)
2026-01-07T11:24:39.014819 - [ComfyUI-Manager] network_mode: public
2026-01-07T11:24:39.015155 - [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'.
2026-01-07T11:24:39.228734 - ### ComfyUI Revision: 150 [f59f71cf] *DETACHED | Released on '2025-12-30'
2026-01-07T11:24:39.404289 -
Import times for custom nodes:
2026-01-07T11:24:39.404548 - 0.0 seconds: D:\ComfyUI_windows_portable\ComfyUI\custom_nodes\websocket_image_save.py
2026-01-07T11:24:39.404745 - 0.0 seconds: D:\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_ipadapter_plus_fork
2026-01-07T11:24:39.404933 - 0.1 seconds: D:\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI_IPAdapter_plus
2026-01-07T11:24:39.405103 - 0.3 seconds: D:\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-Manager
2026-01-07T11:24:39.405281 -
2026-01-07T11:24:39.451522 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/alter-list.json
2026-01-07T11:24:39.476109 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/model-list.json
2026-01-07T11:24:39.529135 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json
2026-01-07T11:24:39.642464 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
2026-01-07T11:24:39.725775 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json
2026-01-07T11:24:40.692695 - Context impl SQLiteImpl.
2026-01-07T11:24:40.692920 - Will assume non-transactional DDL.
2026-01-07T11:24:40.695933 - No target revision found.
2026-01-07T11:24:40.777828 - Starting server

2026-01-07T11:24:40.779224 - To see the GUI go to: http://127.0.0.1:8188
2026-01-07T11:24:42.170182 - [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.
2026-01-07T11:24:42.180782 - [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.
2026-01-07T11:24:42.915511 - [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.
2026-01-07T11:24:42.924348 - [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.
2026-01-07T11:24:43.587097 - FETCH ComfyRegistry Data: 5/1182026-01-07T11:24:43.587325 -
2026-01-07T11:24:47.560139 - got prompt
2026-01-07T11:24:47.632160 - Failed to validate prompt for output 7:
2026-01-07T11:24:47.632607 - Output will be ignored
2026-01-07T11:24:47.632951 - invalid prompt: {'type': 'prompt_outputs_failed_validation', 'message': 'Prompt outputs failed validation', 'details': '', 'extra_info': {}}
```

### Other

_No response_