9:19:37 PM CONSOLE: ERROR]: Error occurred while enabling Citizens v2.0.13-SNAPSHOT (build 1178) (Is it up to date?)
9:19:37 PM CONSOLE: constraint violation: when resolving method "net.citizensnpcs.api.CitizensAPI.setImplementation(Lnet/citizensnpcs/api/CitizensPlugin;)V" the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) of the current class, net/citizensnpcs/Citizens, and the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) for the method's defining class, net/citizensnpcs/api/CitizensAPI, have different Class objects for the type net/citizensnpcs/api/CitizensPlugin used in the signature