Vertex AI explain with a custom trained scikit-learn classification model

[rgulden]

Hi Google Community,

I was wondering, has anyone been able to successfully train and deploy a custom trained scikit-learn classification model and deploy it to a vertex endpoint with the feature attribution through the explain endpoint working?

Every time i define my instances, predictions and explanation_spec while uploading my model, i get errors on the endpoint for the :explain method. Specifically, i get '400 bad request' with no information on why it was a bad request.

I am using the v1beta1 ai platform python SDK and also am using a custom basic serving container. The custom container works for :predict but :explain does not work. Is there some example code out there? Is scikit-learn not supported for feature attribution? 

Thanks! Ryan