Getting error while previewing the content

[joshirohit100]

Steps -

• Setup ACMS headless V2 site using https://github.com/acquia/drupal-recommended-project template
• Use the demo content while setup
• Not setup NextJS site while headless V2 setup
• Once site is installed, manually enable nextJS
• Setup nextJS site using the acquia nextjs starterkit
• Once setup is done, verify nextjs site is opening fine
• Then edit an article content and add a new revision in draft state and check the preview of the content
• Notice the error in preview
• Also notice error now on NextJS site as well (seems something is cached)

[joshirohit100]

This seems happening because of some change in consumer module. And because of that clientID is not set for headless consumer.

To fix this, edit the headless consumer and add the client id manually or generate that. Then copy this client id from drupal and update in .local.env in nextjs app as currently we are using UUID of consumer and not the client id.