At the JPY Notebooks in the Hands on with Data Science Course I had a problem with the execution of the notepad and I managed to fix it by changing the attribute related to the dataframe.

“Data_processing_and_analysis_for_IDA_course.ipynb”
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# Plot flow rate vs pressure on a scatter plot

# Instead of using plt.scatter(dps1["3695151197573416|average"],dps1["622801209626283|average"]) use the bellow line of code

plt.scatter(dps1["pi:160182|average"],dps1["pi:160697|average"])

plt.xlabel('Flow rate')

plt.ylabel('Pressure')

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