When a 'Mux Scheduler' is created for a mux that has no tuned service, the following message appears continuously in the log:
yyyy-mm-dd HH:MM:SS.NNN [ NOTICE] subscription: nnnn: No input source available for subscription "" to mux "<Frequency>MHz in <Network Name>"
To stop the loop, identify the 'Mux Scheduler' in question and disable it.
