NotFoundError: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child o...

[ghost]

Describe the bug

To Reproduce

Expected behavior

Screenshots

Applicable Versions:

• Netlify CMS version: netlify-cms@2.10.150
• Git provider: git-gateway
• Browser version: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36

CMS configuration

backend:
  name: git-gateway
  accept_roles:
    - admin
    - editor
media_folder: theme/assets/images
public_folder: /assets/images
collections:
  - name: pages
    label: Pages
    identifier_field: title
    extension: md
    create: false
    delete: false
    slug: "{{slug}}"
    editor:
      preview: false
    folder: cms/pages
    fields:
      - label: Title
        name: title
        widget: string
      - label: Publish Date
        name: date
        widget: datetime
      - label: Layout
        widget: hidden
        name: layout
        default: "{{slug}}.html"
      - label: Seo
        name: seo
        widget: object
        collapsed: true
        fields:
          - label: Title
            name: title
            widget: string
            required: false
          - label: Description
            name: description
            widget: string
            required: false
          - label: No index
            name: noindex
            widget: boolean
            default: false
            required: false
          - label: Open Graph Title
            name: og:title
            widget: string
            required: false
          - label: Open Graph Image
            name: og:image
            widget: image
            required: false
            media_library:
              config:
                multiple: false
          - label: Twitter Title
            name: twitter:title
            widget: string
            default: summary
            required: false
          - label: Twitter Card
            name: twitter:card
            widget: string
            default: summary
            required: false
          - label: Twitter Site
            name: twitter:site
            widget: string
            required: false
          - label: Twitter Creator
            name: twitter:creator
            widget: string
            required: false
          - label: Additional HTML tags
            name: additional_tags
            widget: text
            required: false
    publish: true
    type: folder_based_collection
    sortable_fields:
      - commit_date
      - title
      - date
      - commit_author
    view_filters: []
    view_groups: []
  - name: category
    label: Categories
    folder: cms/category
    create: true
    identifier_field: name
    extension: md
    slug: "{{slug}}"
    fields:
      - hint: ""
        name: title
        label: Name
        widget: string
        required: true
      - hint: ""
        name: created-on
        label: Created On
        widget: datetime
        required: false
      - hint: ""
        name: updated-on
        label: Updated On
        widget: datetime
        required: false
      - hint: ""
        name: published-on
        label: Published On
        widget: datetime
        required: false
      - hint: ""
        name: f_promo-pic
        label: Promo Pic
        widget: object
        required: false
        fields:
          - hint: ""
            name: url
            label: Image
            widget: image
            required: false
            allow_multiple: false
          - hint: Image Alt
            name: alt
            label: alt
            widget: string
            required: false
      - hint: ""
        name: f_desc
        label: Description
        widget: string
        required: false
      - hint: ""
        name: f_thumbnail-pic
        label: Thumbnail Pic
        widget: object
        required: false
        fields:
          - hint: ""
            name: url
            label: Image
            widget: image
            required: false
            allow_multiple: false

...

[erezrokah]

Hi @Ysipower, can you fill in the missing information based on https://github.com/netlify/netlify-cms/issues/new?assignees=&labels=type%3A+bug&template=bug_report.md&title=Please+replace+with+a+clear+and+descriptive+title