Problem on Windows when transfering data from Pandas to H2O

When transfering data within the Python Script node from a pandas data frame to H2O cluster on Windows there seems to be a strange problem. The command works well in the enclosed Jupyter notebooks (in subfolder /script/) but not when started from within KNIME. Although the error message comes from H2O the problem seems somehow connected to KNIME. This workflow also demonstrates various ways to load parquet and other files within Python.

This is a companion discussion topic for the original entry at