"Something went wrong. Try clicking Add block again." Error

[govindrai]

I am trying to test Theme App Extensions. I'm using Dawn 2.0 theme

I am using the code from https://github.com/Shopify/theme-extension-getting-started

I was able to push via shopify extension push and enabled preview mode.

However when trying to play with the extension in the theme editor I just see the error:

Appreciate your help.

[govindrai]

In the app embed section this appears:

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[Sky-bits]

@govindrai In your code some error will be their you can check your code with this command shopify extension check

[govindrai]

No longer continuing Shopify development. Closing.