I am also encountering the same problem with result code -111. The blu-ray will get all the way through encoding and then bring up the same error message posted by MTMike above. I need to deliver a blu-ray to a client by Monday so I need a solution to this ASAP. Has anyone figured it out?
Running on a 2017 iMac with a 4.2 GHz Processor and 64 GB of RAM. OS is Mojave 10.14.