Bookmark export fails with error "Error: can't access property "screen_name", tweet.core.user_results.result.core is undefined"

[sborman]

After scrolling through all bookmarks, attempting to export results in the following error:

Error: can't access property "screen_name", tweet.core.user_results.result.core is undefined

Platform info:
MacOS Tahoe 26.2, Firefox 146.0.1 (aarch64), Tampermonkey 5.4.1