Uncaught TypeError: i.createRoot is not a function

[hktari]

Bug report

What is the current behavior?
navigating to the admin page shows white screen. Console shows following error:

12:03:55.222 Uncaught TypeError: i.createRoot is not a function
default decap-cms-app.js:393
cms.js:21
cms.js:29
cms.js:16
decap-cms-app.js:393:85604

If the current behavior is a bug, please provide the steps to reproduce.

1. go to README.md and click "deploy to netlify" button
2. navigate to the /admin page of the deployed site
3. white screen and console error is displayed

What is the expected behavior?
Expect to see a login form and no console errors from decap-cms-app.js

Other relevant information:

Node.js version: v14.15.0
NPM/Yarn version: 6.14.8
Operating System: netlify
Additional tools:

[Ys-sudo]

Same issue here encountered with gatsby v4 gatsby-plugin-decap and decap-cms-app, the solution i chose was to downgrade the plugin to "gatsby-plugin-netlify": "^5.0.0", "gatsby-plugin-netlify-cms": "^6.0.0", and "netlify-cms-app": "^2.15.72", in package.json, then the cms would work as expected.

[alexmndzdev]

any other solution? instead of returning to netlify-cms which is already deprecated

[martinjagodic]

The best solution would be to submit a fix for this issue as a PR. If anyone is interested and/or has questions, let us know.

[alexmndzdev]

@hktari @Ys-sudo , you only need to upgrade node version, or at least that work for me, i had version 14 too, then when i switch to 15 it works, i have already create a pull request resolving this for the repo. Thanks for the suggestion @martinjagodic

[hktari]

It looks like bumping node version has fixed the issue. Thank you for your support in resolving this matter !