[21:02:39 INFO]: Starting minecraft server version 1.15.2
[21:02:39 INFO]: Loading properties
[21:02:41 INFO]: This server is running CraftBukkit version git-Spigot-800b93f-8160e29 (MC: 1.15.2) (Implementing API version 1.15.2-R0.1-SNAPSHOT)
[21:02:41 INFO]: Debug logging is disabled
[21:02:41 INFO]: Server Ping Player Sample Count: 12
[21:02:41 INFO]: Using 4 threads for Netty based IO
[21:02:41 INFO]: Default game type: SURVIVAL
[21:02:41 INFO]: Generating keypair
[21:02:43 INFO]: Starting Minecraft server on *:25565
[21:02:43 INFO]: Using default channel type
[21:02:44 WARN]: **** FAILED TO BIND TO PORT!
[21:02:44 WARN]: The exception was: java.net.BindException: Address already in use
[21:02:44 WARN]: Perhaps a server is already running on that port?
[21:02:44 INFO]: Stopping server
[21:02:44 INFO]: Saving players
[21:02:44 INFO]: Saving worlds