IndexSizeError: Failed to execute 'setStart' on 'Range': There is no child at offset 2.

[umihanik01]

Describe the bug

To Reproduce

Expected behavior

Screenshots

Applicable Versions:

• Netlify CMS version: netlify-cms@2.10.93
• Git provider: git-gateway
• Browser version: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36

CMS configuration

backend:
  branch: main
  name: git-gateway
  squash_merges: true
collections:
  - sortable_fields:
      - commit_date
      - widget_id
      - commit_author
    view_filters: []
    identifier_field: widget_id
    public_folder: /static/media
    path: "{{slug}}"
    summary: "{{filename}}: {{title}}"
    media_folder: /static/media
    name: home
    folder: content/home
    view_groups: []
    publish: true
    label: Homepage
    fields:
      - label: Widget Type (https://wowchemy.com/docs/page-builder/)
        name: widget
        required: true
        widget: string
      - default: my-widget-123
        label: Your reference for this widget (e.g. recent-posts)
        name: widget_id
        widget: string
      - default: true
        label: Headless?
        name: headless
        widget: hidden
      - default: 10
        label: Widget position
        max: 1001
        min: 0
        name: weight
        step: 10
        value_type: int
        widget: number
      - label: Title
        name: title
        required: false
        widget: string
      - label: Subtitle
        name: subtitle
        required: false
        widget: string
      - default: true
        label: Enabled?
        name: active
        required: false
        widget: boolean
      - fields:
          - default: "2"
            label: "Columns (options: `1` or `2`)"
            name: columns
            required: false
            widget: string
          - fields:
              - allowInput: true
                enableAlpha: true
                label: Solid color
                name: color
                required: false
                widget: color
              - allowInput: true
                enableAlpha: true
                label: Gradient start
                name: gradient_start
                required: false
                widget: color
              - allowInput: true
                enableAlpha: true
                label: Gradient end
                name: gradient_end
                required: false
                widget: color
              - default: false
                label: Use a light text color?
                name: text_color_light
                required: false
                widget: boolean
              - label: Image
                media_folder: /static/media
                media_library:
                  config:
                    multiple: false
                name: image
                public_folder: /static/media
                required: false
                widget: image
              - default: 0
                max: 1
                widget: number
                value_type: float
                name: image_darken
                step: 0.1
                min: 0
                label: Darken the image? (0 is transparent & 1 is opaque)
                required: false
            label: Background
            name: background
            required: false
            widget: object
        label: Widget Style
        name: design
        required: false
        widget: object
      - label: Body
        name: body
        required: false
        widget: markdown
    type: folder_based_collection
    create: true
  - sortable_fields:
      - commit_date
      - title
      - commit_author
      - bio
    view_filters: []
    label_singular: Author
    public_folder: ""
    path: "{{slug}}/_index"
    media_folder: ""
    name: authors
    folder: content/authors
    view_groups: []
    publish: true
    label: Authors
    filter:
      field: cms_exclude
    fields:
      - label: Display name (such as your full name)
        name: title
   
...

[erezrokah]

Hi @umihanik01, can you share a screenshot of the error, the full config.yml and a step by step reproduction?

[davidenke]

Have a look at this comment in #4961.