[12:16:02 ERROR]: Could not load 'plugins\ChangeSkin-2.4.jar' in folder 'plugins' org.bukkit.plugin.UnknownDependencyException: ProtocolLib at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:216) [spigot-1.12.jar:git-Spigot-59622 1b-9a1fc1e] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:298) [spigot-1.12.jar:git-Spigot-596221b -9a1fc1e] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [spigot-1.12.jar:git-Spigot-596221b- 9a1fc1e] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:544) [spigot-1.12.jar:git-Spigot-596221b-9 a1fc1e] at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]

[12:17:44 INFO]: This server is running CraftBukkit version git-Spigot-596221b-9a1fc1e (MC: 1.12) (Implementing API version
1.12-R0.1-SNAPSHOT)