Loading libraries, please wait...
2018-01-19 21:05:22,390 main WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
2018-01-19 21:05:22,392 main WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
[21:05:25 INFO]: Starting minecraft server version 1.12.2
[21:05:25 INFO]: Loading properties
[21:05:25 INFO]: Default game type: SURVIVAL
[21:05:25 INFO]: This server is running CraftBukkit version git-Spigot-9b8bba4-bdcc7c7 (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT)
[21:05:25 INFO]: Debug logging is disabled
[21:05:25 INFO]: Server Ping Player Sample Count: 12
[21:05:25 INFO]: Using 4 threads for Netty based IO
[21:05:25 INFO]: Generating keypair
[21:05:25 INFO]: Starting Minecraft server on *:25565
[21:05:25 INFO]: Using default channel type
[21:05:26 WARN]: **** FAILED TO BIND TO PORT!
[21:05:26 WARN]: The exception was: java.net.BindException: Address already in use: bind
[21:05:26 WARN]: Perhaps a server is already running on that port?
[21:05:26 INFO]: Stopping server
[21:05:26 INFO]: Saving players
1) There is probably an active service/process using the port 25565 - Solution: Check if there is a java active process running under that port and stop it
2) The IP address you have set on your server.properties is not in part of your network - Solution: Make sure that the IP address you are assigning to the server has been assigned to your machine, or just set that option blank