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 […]

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