@Nancyjay could you check the following
- try to use a Cache – KNIME Hub node just before you use the Python node.
- store your Python environment with a Conda Environment propagation so we could see what your Python is like (https://www.knime.com/blog/how-to-manage-python-environments-conda-and-knime) and provide a minimal example
- provide us with a detailed log on DEBUG level (Files Corrupted During File Transfer - #8 by mlauber71)
- test what happens when you use the (new) Columnar Storage format (KNIME Columnar Table Backend Boosts Performance | KNIME)
- see if you have columns other than String and numbers that might require special attention (as of now) in the Python Labs node (Error with pandas in the Labs Python Integration - #9 by mlauber71)