Gutenberg: Custom Gutenberg Block broken after update to 2.9

[purzlbaum]

After the update I my custom built block is broken.

This is the error message from the Chrome console:
react-dom.min.0d9b4499.js:62 Error: Minified React error #130; visit http://reactjs.org/docs/error-decoder.html?invariant=130&args[]=undefined&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at ze (react-dom.min.0d9b4499.js:82)
at l (react-dom.min.0d9b4499.js:12)
at ec (react-dom.min.0d9b4499.js:46)
at react-dom.min.0d9b4499.js:61
at k (react-dom.min.0d9b4499.js:129)
at h (react-dom.min.0d9b4499.js:129)
at beginWork (react-dom.min.0d9b4499.js:135)
at e (react-dom.min.0d9b4499.js:168)
at f (react-dom.min.0d9b4499.js:169)
at A (react-dom.min.0d9b4499.js:175)
@ react-dom.min.0d9b4499.js:62

[youknowriad]

Sorry for the breakage. Unfortunately, this error doesn't help. Make sure to run unminified React (SCRIPT_DEBUG set to true). You'll have more details about the error. This is more likely that the custom plugin is using one of the deprecated components? See here for the deprecated features, also make sure to check the warnings in the browser's console https://wordpress.org/gutenberg/handbook/reference/deprecated/#2-8-0

[youknowriad]

See https://github.com/WordPress/gutenberg/issues/6837 it's probably a similar issue.

[youknowriad]

How is your script enqueued on the server?

[purzlbaum]

The fix from #6837 seems to do the job. I'll close this issue now.