OpenAI Node: expected a string, but got an array instead

Help me Build my Workflow
1

Hey. The full error is this:
400 Invalid type for 'tool_outputs[0].output': expected a string, but got an array instead.

This is with an OpenAI Node, operator “Message an Assistant.” It’s connected to a Supabase vector store.

2

Is bumping a thing here?

I’ve been investigating taking apart the OpenAI Node and running a custom API call. I’m now wondering if there’s transparency on how that node works somewhere?