WebSocket is not defined

This error message typically appears in the console of a web browser when attempting to use WebSocket functionality without first declaring or importing the WebSocket object.

To resolve this error, ensure that you have properly declared and initialized the WebSocket object in your code. This may include importing the required libraries or modules, as well as properly instantiating the WebSocket object with the appropriate parameters.

Additionally, ensure that your web browser supports WebSocket functionality and that you are using a compatible version of the browser. Some older browsers may not support WebSocket, or may require additional configuration or setup to enable this feature.