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Loading aborted due to error reloading workflow data #6014

@49RpK5dY

Description

@49RpK5dY

Prerequisites

  • I am running the latest version of ComfyUI
  • I have searched existing issues to make sure this isn't a duplicate
  • I have tested with all custom nodes disabled (see how)

What happened?

Unable to load most old workflows with subgraphs on 1.29.1

Loading aborted due to error reloading workflow data

TypeError: can't access property "value", this.widgets[index2] is undefined

Narrowing down the issue it appears something breaks during the copy of nested subgraph between the workflows when there are physical links present.

Steps to Reproduce

  1. Create a subgraph with physical links to widgets.
  2. Put the said subgraph inside another one.
  3. Copy the subgraph and paste in empty workflow.
  4. Switch to another workflow and back.
    test.json

How is this affecting you?

Crashes ComfyUI completely

ComfyUI Frontend Version

1.29.1

Browser

Firefox

Console Errors

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Additional Context

No response

┆Issue is synchronized with this Notion page by Unito

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