Fixing attempt block recovery with copy and paste
If you are using the Gutenberg plugin to access the latest WordPress features, occasionally you may run into the Attempt Block Recovery error. This can happen when the block markup changes for whatever reason.
If you have a page using the same blocks in multiple places, you can quickly fix this issue by clicking the Attempt Block Recovery button for one of the broken blocks, correcting the settings, and then copying and pasting that block over the other broken ones.
Below is a quick demonstration on how this can be done from the Editor: