I have the same problem!!my opnsense version is 19.1.7 production
I don't think anything changed there for a while so it could be a local issue entirely. Do a health check from the firmware page to make sure that no files are damaged that would cause this.
I have two devices both 19.1.7. one was updated from 19.1.6, and the other one was updated from 19.1.
Quote from: chienchou.pan on May 09, 2019, 11:31:13 amI have two devices both 19.1.7. one was updated from 19.1.6, and the other one was updated from 19.1.Both are connected via serial/usb to the UPS?
And usbhid same error?
I'd guess not every APC UPS supports the apcsmart driver. The whole nut-tools software is quite a mess, so I'd rather be happy if it just works