Error Running KNIME Workflow in Python

I am attempting to run a KNIME workflow using the knimepy API and get the following error:

I cannot figure out why this error is happening or how to resolve it. Can anyone help me?

Also, I have seen another answer suggesting to close the KNIME workflow before running. I have tried this and it did not help.

The workflow itself also runs fine on its own, it does not run when i add the container input/output and attempt to run with knimepy.

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