A Lamdera package. It is not on package.elm-lang.org: the Lamdera compiler provides it, from static.lamdera.com, so lamdera install works and elm install does not.
Errors that might happen when sending data.
Close the websocket connection
Create a websocket handle that you can then open by calling listen or sendString.
Listen for incoming messages through a websocket connection. You'll also get notified if the connection closes.
Send a string
Here are some possible reasons that your websocket connection closed.
A websocket connection