A AU plugin has error with auval

Hello, i have a AU plugin midi to midi, on Mac OS that works fine with Juce_Host, but I don’t see it proposed with garageband.
The command:

 auvaltool -v aumi Cbcj Manu

gives an error:


--------------------------------------------------
VERIFYING DEFAULT SCOPE FORMATS:
Input Scope Bus Configuration:
 Default Bus Count:0

Output Scope Bus Configuration:
 Default Bus Count:1
    Default Format: AudioStreamBasicDescription:  2 ch,  44100 Hz, Float32, deinterleaved

ERROR: Default Format of unit does not match reported Channel handling capabilities
* * FAIL
AU VALIDATION FAILED: CORRECT THE ERRORS ABOVE.

But I don’t understand this error. Do you have an idea please?

I’m getting the same error. Has anyone else seen this before?