[Resolved] Stackable + Reusable Blocks gives “This block has encountered an error and cannot be previewed”

Blocks in blocks in blocks

I recently installed Stackable’s “Ultimate Gutenberg Blocks” plugin for WordPress as I wanted a block that could be expanded for my series of OCR posts. I created one, an ‘expand’ block in a container which I made a reusable block. However, doing so gave the error:

“This block has encountered an error and cannot be previewed”

I submitted a bug report to their issue tracker, but there are quite a few open bugs there; we’ll see how soon it’s addressed.

Example:

Edit: This has now been resolved