Deploying example worker to CF causes web socket connection to fail after entering username

[rohanbam]

Hi, I've deployed the example worker to CF and set the worker usage mode to unbound.
After entering the username, the websocket connection immediately fails.

Using wrangler dev locally also fails with the same error.

Using pnpm dev, the same worker is able to connect to the websocket successfully.

Could this be to do with the cfw build command?

What am I doing wrong? Please help.