Zigbee2MQTT addon: Frontend disappeared after HA core upgrade from 2022.5.0 to 2022.5.1

With my upgrade of HA core from 2022.5.0 to 2022.5.1 the frontend of the Zigbee2MQTT addon is no longer reachable when clicking on the ingress link in the sidebar.

I suspect it is not the upgrade of HA core from 2022.5.0 to 2022.5.1 (z2m works perfectly here) but the latest update to z2m to v1.25.0-1 and then to v1.25.1-1. Look here and here to learn about the Breaking Changes of the z2m add-on.

I reinstalled the addon today, and it worked right away with no changes in the GUI configuration (and my existing config files). Thank you!