Could this prompt be clarified? The text
Check DEVONthink has rights to access the web browser and that the active tab
has a URL.
doesn’t actually tell the user where to look, or that they need to look in the System Settings rather than DT’s app settings. An explicit instruction to check ‘System Settings > Privacy & Security > …’ would be helpful.
Also, while I was anticipating @cgrunenberg’s explanation would be correct, DT already had automation privileges enabled for Finder and Safari. Enabling Full Disk Access, as @BLUEFROG suggested, seems to have resolved the issue.
On a related note, this thread from a few years ago mentions that the Services menu was at one time preferred to using the Sorter, but that Safari 14’s support for services is broken. DT’s options aren’t present under ‘Safari > Services’ in 17.3.1, so I gather Apple still has not attended to this bug?