Web server failed to start. Port 80 was already in use. heroku

Пытался подключить Lavalink чтобы сделать бота для дискорда.

APPLICATION FAILED TO START

Description:

Web server failed to start. Port 80 was already in use.

Action:

Identify and stop the process that's listening on port 80 or configure this application to listen

Procfile

web: java -Dserver.port=80 -jar Lavalink.jar