WebRTC: node.js and browser (private to private)

I want to implement the feature: node.js will connect to the browser via Webrtc (Not directly, but via Relay, because I know it is currently in draft PR).

Is this possible?
Because I tested it and got an error from the browser: index.js:155 Uncaught (in promise) Error: bad candidate received. And error from nodejs: CodeError: unexpected end of input

I have tested nodejs connecting to nodejs and browser connecting to browser (from the example source code), But I want nodejs to connect to browser via webrtc

Thank you so much!