It appears that with today's (June 20th) update to Zotero (5.0.68), I am no longer able to use the Zotero Connector in Firefox to "Save to Zotero" on machines running MacOS 10.14.5. Instead, the connector icon in Firefox changes from a PDF icon to an "X" icon with the scroll over text, "Saving failed. Is Zotero Running?". I have deleted and reinstalled the connector, restarted both programs, restarted my computer, and confirmed this issue is present on two different machines running the same set up. I can also confirm that the functionality of this feature was working on both machines as of last night.

Is anyone else experiencing this issue?