Error: Null Pointer Exception in Joiner Node

Hello Everyone!

I’ve been running a flow where I’ve met an error “Execute failed: (“NullPointerException”): null” being thrown by the Joiner Node.

I’m only using “id_pedido” as key.

I already tried:

• Filtering missing values

• Recreating the node

• Tried joining with other keys

This is an example of what I’m trying to join from the group by with the joiner:

The node runs up to around 8% and throws the error…

Has anyone ever met this issue?