Accordion Block Error (cannot be previewed)

Hello,

I have a site with an accordion FAQ that is giving the following error whenever you try to click on any of the questions:

This block has encountered an error and cannot be previewed.

The accordion displays properly on the front-end of the site, and initially is fine on the edit page screen. The error occurs when you try to click on an accordion title. The accordion content section is fine.

There is usually an opinion to try to fix the block, but this does not give that option, and there is no way to edit the accordion title.

There are multiple accordions on the site, this appears to be the only one giving the error. I did try copying just the accordion block to a new draft page, but the same error is occurring here, too.

Short of re-creating the FAQ, is there anything we can do to fix the errors on the existing accordion?

Thanks in advance for your help!