You didn’t let it update your config file during the update to the new format. You need to replace /userdata/etc/org.ops4j.pax.logging.cfg
With the contents of https://github.com/openhab/openhab-distro/blob/3b1bbf413f6c4b849891708609dcfa8c2ea609e4/distributions/openhab/src/main/resources/userdata/etc/org.ops4j.pax.logging.cfg