Gateway error after update

[Ted]

After updating to these versions:
OPNsense 22.1.4_1-amd64 / FreeBSD 13.0-STABLE / OpenSSL 1.1.1n 15 Mar 2022
I've encountered a problem.

My firewall has three ISP connections for failover. This configuration has been stable for several months. After the update, the Tier 2 and Tier 3 ISP dpinger services are running OK. The Tier 1 ISP dpinger service is not running, and cannot be started. I tried disabling and re-enabling the gateway under System | Gateways | Single, and when I clicked Save, I received the following error message:
"Cannot add IPv4 Gateway Address because no IPv4 address could be found on the interface."
Traffic does seem to be flowing through the Tier 1 ISP connection, and I am reluctant to poke at things during business hours.

I'd be grateful for any suggestions.
Thanks,
Ted