Bukkit

idk what it means, but here. :D

[05:50:43] [Server thread/INFO]: [LobbyAPI] Enabling LobbyAPI v3.7.103
[05:50:43] [Server thread/ERROR]: Error occurred while enabling LobbyAPI v3.7.103 (Is it up to date?)
net.minecraft.server.v1_15_R1.ResourceKeyInvalidException: Non [a-z0-9/._-] character in path of location: minecraft:saurusnation lobby
at net.minecraft.server.v1_15_R1.MinecraftKey.(SourceFile:38) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftKey.(SourceFile:43) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.IRegistry.a(SourceFile:196) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.DimensionManager.register(DimensionManager.java:24) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.createWorld(CraftServer.java:956) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.Bukkit.createWorld(Bukkit.java:502) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at me.zombie_striker.lobbyapi.Main.onEnable(Main.java:164) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:343) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:479) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:450) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:376) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:448) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:261) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:762) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at java.lang.Thread.run(Thread.java:834) [?:?]

You cannot have world names with spaces in it. Rename the world file so it is one word.

i got another error. [00:11:51] [Server thread/ERROR]: Error occurred while enabling LobbyAPI v3.7.103 (Is it up to date?)
net.minecraft.server.v1_15_R1.ResourceKeyInvalidException: Non [a-z0-9/._-] character in path of location: minecraft:~
at net.minecraft.server.v1_15_R1.MinecraftKey.(SourceFile:38) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftKey.(SourceFile:43) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.IRegistry.a(SourceFile:196) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.DimensionManager.register(DimensionManager.java:24) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.createWorld(CraftServer.java:956) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.Bukkit.createWorld(Bukkit.java:502) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at me.zombie_striker.lobbyapi.Main.onEnable(Main.java:164) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:343) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:479) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:450) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:376) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:448) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:261) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:762) [CraftBukkit-1.15.2.jar:git-Bukkit-4d975ac]
at java.lang.Thread.run(Thread.java:834) [?:?]

Somehow it is trying to register a world called "~". For now, try just providing the name of the world if the ~ selector is not working.