Ошибка.
[08:48:28 ERROR]: Could not load 'plugins/VillagerMachinery_3_1.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.IllegalArgumentException: Plugin already initialized!
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) ~[spigot.jar: git-Paper-1618]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:318) ~[spigot.jar: git-Paper-1618]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:222) ~[spigot.jar: git-Paper-1618]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:616) ~[spigot.jar: git-Paper-1618]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: java.lang.IllegalArgumentException: Plugin already initialized!
at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:187) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.java.JavaPlugin.(JavaPlugin.java:60) ~[spigot.jar: git-Paper-1618]
at me.lucko.helper.plugin.ExtendedJavaPlugin.(ExtendedJavaPlugin.java:55) ~[?:?]
at ru.mrbrikster.commanddirector.Main.(Main.java:19) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_242]
at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:94) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[spigot.jar: git-Paper-1618]
… 6 more
Caused by: java.lang.IllegalStateException: Initial initialization
at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:190) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.java.JavaPlugin.(JavaPlugin.java:60) ~[spigot.jar: git-Paper-1618]
at me.lucko.helper.plugin.ExtendedJavaPlugin.(ExtendedJavaPlugin.java:55) ~[?:?]
at ru.mrbrikster.commanddirector.Main.(Main.java:19) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_242]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_242]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_242]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_242]
at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_242]
at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:94) ~[spigot.jar: git-Paper-1618]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[spigot.jar: git-Paper-1618]
Нужно скачивать Tlauncher. Вот ссылка https://tlauncher.org/
