Why are sysdiagnose logs blank?

I'm using os_log to with .error and my own OSLog with a category and subsystem. I'm using a developer build of my app on an iPhone XR with ios 12.1.1 and For some reason the sysdiagnose logs in `Settings/Privacy/Analytics/Analytics Data` is always blank.


I also tried looping and logging with every all different levels of logging with their respective isEnabled states with my OSLog object, but that didn't help either.


Any idea how to make this work?