Hello, If the HPFOREST node does not turn RED, that indicates there is no mechanic problem with the flow. Agree 10 lines for RF is just not right. First could be setting driven, for example, one of the stopping rules is too stopping too early. Not hearing if you have modified setting on the HPFOREST. If you are running on default setting, then your data is not sufficient to drive the model to begin with.
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