Hyperopt Error: There are no evaluation tasks, cannot return argmin of task losses.

[ChingizK]

The trials succeed when the cell in the notebook is executed manually:

However, the same process fails when executed as a Workflow:

The error simply says that there's an issue with the objective function. However how can that be the case if I'm able to successfully run the exact same code when I manually run the notebook cell? The notebook run fails when triggered through a Workflow run.

Unfortunately, changing compute cluster had no effect either.

Task fails with the following error: Exception: There are no evaluation tasks, cannot return argmin of task losses.

[honj]

I've run in to the same issue using SparkTrials.

Runs fine manually.

Runs using only Trials in the workflow.

Get this error when using SparkTrials.

I've tried dropping parallelism right down, making sure there's only one experiment on that cluster.

Did you get to the bottom of the issue?