Netlify-cms: Error while opening post: 1:1 Incorrectly eaten value

[jkaan]

Describe the bug

If I tap on any post, I get the following error:

To Reproduce

Repo is here: https://github.com/destination-unknown/destination-unknown-frontend.

If you login and then you click on any post, it shows this error.

Expected behavior

Show me post.

Screenshots

This is a screenshot of the errors in the console.

Applicable Versions:

• Netlify CMS version: 2.10.6
• Git provider: GitHub
• OS: MacOS
• Browser version: Brave Version 1.2.42 Chromium: 79.0.3945.117 (Official Build) (64-bit) & Chrome Version 79.0.3945.117 (Official Build) (64-bit)

CMS configuration

backend:
  name: git-gateway
  branch: master # Branch to update (optional; defaults to master)
publish_mode: editorial_workflow
media_folder: 'static/images/uploads' # Media files will be stored in the repo under static/images/uploads
public_folder: '/images/uploads' # The src attribute for uploaded media will begin with /images/uploads
collections:
  - name: 'blog' # Used in routes, e.g., /admin/collections/blog
    label: 'Blog' # Used in the UI
    folder: '_posts/blog' # The path to the folder where the documents are stored
    create: true # Allow users to create new documents in this collection
    slug: '{{slug}}' # Filename template, e.g., YYYY-MM-DD-title.md
    fields: # The fields for each document, usually in front matter
      - { label: 'Layout', name: 'layout', widget: 'hidden', default: 'blog' }
      - { label: 'Title', name: 'title', widget: 'string' }
      - {
          label: 'Short description',
          name: 'short_description',
          widget: 'string',
        }
      - { label: 'Publish Date', name: 'date', widget: 'datetime' }
      - { label: 'Featured Image', name: 'thumbnail', widget: 'image' }
      - { label: 'Body', name: 'body', widget: 'markdown' }

[alexanderroidlhhs]

I have the same issue
thanks @erezrokah for referring.

What I found is that it only happens to pages with images for me!

[JasonTame]

Yes, I have the same problem - any page with an image shows the exact same error as the one reported.

[alexanderroidlhhs]

But how do I update now to have this fixed?
I still have it in the backend.

[jkaan]

@alexanderroidlhhs As far as I could see they tagged a new release which is 2.15.2, so if you are using version 2.15.2 this will be solved.

How are you adding the Netlify CMS? Perhaps I could help with some instructions on how to update

[erezrokah]

Updating depends on your setup, either update your package.json to [email protected]or [email protected] and run yarn install or npm run install.
If you're loading via unpkg it should auto update if you're using a ^ like so:

<script src="https://unpkg.com/netlify-cms@^2.0.0/dist/netlify-cms.js"></script>

[jkaan]

Works again, thanks a lot!