Look for the device that’s throwing the error and run a replace on it. Then run again zwave repair until you get it to complete successfully. If the device name is not something you know, it could be named something like E4 or a letter and a number, then you have a stranded device. Contact support they may be able to help. If you recently attempted to remove some zwave devices, then put them back in because those left zombies behind. Been there done them all and is no fun. Good luck.