Running the latest betas of 1Password 7 and 1Password X, on the latest version of Chrome. 1Password X and the desktop app seemed to have stopped communicating, and I see this error in the 1Password X Settings page.
I've tried all the troubleshooting steps I could find in the forum:
1Password Version: 7.3
Extension Version: 1.16.2
OS Version: 10.14.5
Sync Type: Not Provided