Problem Can't merge FlowVariable Stacks! (likely a loop problem.)

[jossemmii]

Hi! Im trying to get the best value of k in KNN. I use something similar to iteration over k values using variables in the K Nearest Neighbor node - #4, but I´m getting “Can’t merge FlowVariable Stacks! (likely a loop problem.)” in KNN node due to the X-Partitioner. I need to use this node.

[MartinDDDD]

Hey and welcome to the forum!

Can’t replicate this at the moment - can you try to connect the red flow variable output port of x partitioner node to the flow variable input port of table row to variable loop? That may help… by making the table row to variable loop an inner loop of the main loop…

[jossemmii]

Thank you!! That´s work perfect.