Что за "Perhaps you're connecting to the wrong cluster"?
Делал всё по этому туториалу
https://blog.pusher.com/how-to-build-a-laravel-cha...
И в конце получил ошибку "Perhaps you're connecting to the wrong cluster"
полный текст
WebSocket connection to 'wss://ws-eu.pusher.com/app/this-is-my-key?protocol=7&client=js&version=4.0.0&flash=false' failed: WebSocket is closed before the connection is established.
Pusher : Error : {"type":"WebSocketError","error":{"type":"PusherError","data":{"code":4001,"message":"Could not find app by key this-is-my-key. Perhaps you're connecting to the wrong cluster."}}}