iOS 12 I am seeing these on startup of my synthesizer apps which all use the same startup code, modified slightly from "UsingAVAudioEngineforPlaybackMixingandRecordingAVAEMixerSample" - anyone have a best practices version of this example now that it is no logner being maintained, or does anyone otherwise have an indication of how to get rid of the message?
Message "AVAudioSessionPortImpl.mm:56:ValidateRequiredFields: Unknown selected data source for Port Speaker (type: Speaker)"
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