object of type TrainingInput is not JSON serializable

[neilmcguigan]

workflow = InferencePipeline(
    preprocessor=...,
    estimator=...,
    inputs={
        "train":TrainingInput(s3_data="..."),
        "test":TrainingInput(s3_data="...")
    },
    ...
)

When you call execute() it will fail, saying object of type TrainingInput is not JSON serializable

[wealthystudent]

I also received this error