What version of PMS are you using currently? The current beta has a fix for a Live TV issue that looks similar to the log entries you shared.
If possible could you give the Beta a spin to see if this resolves the error message.
In my experience some “airings” need to have the “New and Repeat Airings” set in order to pick up future airings. I’ll ask around about this, because these should be considered New Airings.
