3/3 instances just updated to OPNsense 26.4.1 business edition all come up with NUT UPS status blank.
Could it be that
https://github.com/opnsense/ports/issues/270
https://forum.opnsense.org/index.php?topic=51861.0
found its way into the Business Edition ?
Since it's an upstream issue and the patching is too complicated there is little we can do for a community bound package/plugin.
# opnsense-revert -r 26.4 nut
Cheers,
Franco