[12:08:54] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:08:54] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:08:54] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:08:54] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:08:54] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:08:55] [Server thread/INFO]: Starting minecraft server version 1.15.2
[12:08:55] [Server thread/INFO]: Loading properties
[12:08:55] [Server thread/INFO]: Default game type: SURVIVAL
[12:08:55] [Server thread/INFO]: Generating keypair
[12:08:56] [Server thread/INFO]: Starting Minecraft server on nightsmmo.ddns.net:25565
[12:08:56] [Server thread/INFO]: Using default channel type
[12:08:58] [Server thread/WARN]: **** FAILED TO BIND TO PORT!
[12:08:58] [Server thread/WARN]: The exception was: java.net.BindException: Cannot assign requested address: bind
[12:08:58] [Server thread/WARN]: Perhaps a server is already running on that port?
[12:08:58] [Server thread/INFO]: Stopping server
[12:08:58] [Server thread/INFO]: Saving worlds
[12:08:58] [Server thread/ERROR]: Exception stopping the server
java.lang.NullPointerException: null
    at net.minecraft.server.MinecraftServer.a(SourceFile:559) ~[server.jar:?]
    at net.minecraft.server.MinecraftServer.s(SourceFile:587) ~[server.jar:?]
    at wd.s(SourceFile:597) ~[server.jar:?]
    at net.minecraft.server.MinecraftServer.run(SourceFile:689) [server.jar:?]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_251]