Node.js client can't send message

[oopooa]

I'm currently working with RocketMQ 5.2.0 and trying to get my Node.js client to connect and send messages. This client was just released a few days ago. I've set up RocketMQ using the broker + proxy model, and I can confirm that pinging the proxy's IP and port works fine.

Here's the code I'm using in my index.js:

But when I run npm start, I'm running into some issues:

I've already created a topic called TopicTest:

Despite that, I'm still hitting a wall:

I'm kind of stumped at this point and not sure what to do next to resolve this. Any insights or suggestions would be super helpful!
Thanks a bunch!