Hi @2002rukahosomi, unfortunately web socket connections are not currently supported in Gemini V5 and this will be why you are seeing this error.
We will bring back support for web apps however we are currently investigating the best form for this to take. This may take the form of WebXR or something else. We do not currently have any timescales available for this but I recommend staying tuned to our social channels where we will share updates as they become available.
If you require LeapJS in the meantime, our previous release Orion 4.1 can be downloaded from the releases page of our website here.
It would be very useful for our internal teams to know what you use websockets and LeapJS for, do you have any example of your projects or use cases that you can share about this?