After the latest mac update Karabiner is showing "virtual_hid_device_client is not connected yet. Please wait for a while." in the log and is not working.
Karabiner 12.4.0
macOS 10.14.5 (18F132)
I had the same problem which was fixed by updating to 12.14.2 (beta release)
Go to Karabiner-Elements -> Misc -> "Check for beta updates"
It is a macOS problem.
Restarting macOS after macOS upgrade solves this issue.
This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
Most helpful comment
I had the same problem which was fixed by updating to 12.14.2 (beta release)
Go to Karabiner-Elements -> Misc -> "Check for beta updates"