[12:36:18] [Server thread/WARN]: **** FAILED TO BIND TO PORT!
[12:36:18] [Server thread/WARN]: The exception was: java.net.BindException: Cannot assign requested address: bind
[12:36:18] [Server thread/WARN]: Perhaps a server is already running on that port?
[12:36:18] [Server thread/INFO]: Stopping server
[12:36:18] [Server thread/INFO]: Saving worlds
[12:36:18] [Server thread/ERROR]: Exception stopping the server
java.lang.NullPointerException: Cannot invoke "abr.o_()" because "???" is null
at net.minecraft.server.MinecraftServer.a(SourceFile:588) ~[server.jar:?]
at net.minecraft.server.MinecraftServer.u(SourceFile:624) ~[server.jar:?]
at aas.u(SourceFile:585) ~[server.jar:?]
at net.minecraft.server.MinecraftServer.x(SourceFile:734) ~[server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:270) ~[server.jar:?]
at java.lang.Thread.run(Thread.java:833) [?:?]