Azure AutoML pipeline -Batch scoring fails with "DriverException: Job failed with There is no succeeded mini batch item returned from run()

Question

While running automl parallel run with tabulardataset ,

azureml_common.parallel_run.exception.NoResultToAppendError: There is no succeeded mini batch item returned from run()

Answer 1

It sounds like your scoring script may not have a correct return line in it's run method. Could you share your scoring file?
For additional context, AutoML jobs don't produce a scoring file that works with batch inferencing, it has to be created manually as per this doc.