I imported some decision rules from SAP HANA PAL using the PMML Reader Node. I connected it to ‘Decision Tree to Image’ node and now I am having a fatal execution error.
ERROR Decision Tree To Image Execute failed: ("NullPointerException"): null
The decision tree rules should contain no null values, so how could this particular error message apply? Troubleshooting thus far:
- - Modifying the configuration settings. For example I tried alternating use of the NODE DISPLAY options (chart, table), but no benefit there.
- - Searching the forum using the error message as search term… I am unable to find any related and actionable information.
- - Examining the knime.log file, but it’s a bit beyond me… I have a lot of programming experience but not in Java.
I include zip file that contains the workflow folder [KNIME_tree_temp1], which includes the PMML input file that contains the decision rules [DT-temp - Copy (2).pmml]. Does anyone have a suggestion?