Hi, folks. I need help. I'm sending a HTTP post request using n8n to Pinecone to query it. What URL should I point it to and should I include headers? If so, can you tell me? I keep getting this error: The connection to the server was closed unexpectedly, perhaps it is offline. You can retry the request immediately or wait and retry later. I'm not sure what's the problem. Or if I'm using wrong parameters.. Any help would be appreciated!