Auval FORMAT TESTS: ca_require: InvalidFormat errors?

Hi, working on a plugin, JUCE 6.0.8, it generates audio but does not take any audio in. I’m seeing the following in auval, many times:

InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870

and I just wonder what it means, is it errors? Am I doing something wrong for AU?

--------------------------------------------------
FORMAT TESTS:

Reported Channel Capabilities (explicit):
      [0, 2]  

No Input, Output Chans:
0-1   0-2   0-4   0-5   0-6   0-7   0-8
      X                                   
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870

[…] snip - many many repeated errors

ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870

* * PASS

My AudioProcessor has the following:

bool PluginProcessor::isBusesLayoutSupported (const BusesLayout& layouts) const
{
        // only allow 0 inputs and 2 outputs (stereo)
    int numIns = layouts.getMainInputChannels();
    int numOuts = layouts.getMainOutputChannels();
    return (numIns == 0 && numOuts == 2);
}

bump… No one has any idea what these mean, and how to fix it? The same AU passes pluginval with strictness level 10…

* * PASS
--------------------------------------------------
FORMAT TESTS:

Reported Channel Capabilities (explicit):
      [0, 2]  

No Input, Output Chans:
0-1   0-2   0-4   0-5   0-6   0-7   0-8
      X                                   
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870
ca_require: ValidFormat(inScope, inElement, newDesc) InvalidFormat /Users/stephen/Development/JUCE/modules/juce_audio_plugin_client/AU/CoreAudioUtilityClasses/AUBase.cpp:870