[09:02:08] [Server thread/ERROR]: Could not load 'plugins/HackedServer.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.IllegalArgumentException: Cannot format given Object as a Date
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[patched_1.12.1.jar:git-Paper-1190]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[patched_1.12.1.jar:git-Paper-1190]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [patched_1.12.1.jar:git-Paper-1190]
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [patched_1.12.1.jar:git-Paper-1190]
	at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:223) [patched_1.12.1.jar:git-Paper-1190]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:616) [patched_1.12.1.jar:git-Paper-1190]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]
Caused by: java.lang.IllegalArgumentException: Cannot format given Object as a Date
	at java.text.DateFormat.format(DateFormat.java:310) ~[?:1.8.0_72]
	at java.text.Format.format(Format.java:157) ~[?:1.8.0_72]
	at uxon.Core.<init>(Core.java:34) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_72]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_72]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_72]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_72]
	at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_72]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:77) ~[patched_1.12.1.jar:git-Paper-1190]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[patched_1.12.1.jar:git-Paper-1190]
	... 6 more