맥북 사용자입니다. localhost 열때 에어플레이 수신 끄면 되는거 아닌가요?

Address already in use

Port 5000 is in use by another program. Either identify and stop that program, or start the server with a different port.

On macOS, try disabling the 'AirPlay Receiver' service from System Preferences -> Sharing.

Process finished with exit code 1

또 이렇게 떠가지고여..