Stacktrace

20:15:30 [ERROR] Throwing
java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/typesafe/config/ConfigFactory
        at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:443) ~[nukkit.jar:?]
        at cn.nukkit.Server.enablePlugin(Server.java:733) ~[nukkit.jar:?]
        at cn.nukkit.Server.enablePlugins(Server.java:722) ~[nukkit.jar:?]
        at cn.nukkit.Server.reload(Server.java:798) ~[nukkit.jar:?]
        at cn.nukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:28) ~[nukkit.jar:?]
        at cn.nukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:257) ~[nukkit.jar:?]
        at cn.nukkit.Server.dispatchCommand(Server.java:751) ~[nukkit.jar:?]
        at cn.nukkit.console.NukkitConsole.lambda$runCommand$0(NukkitConsole.java:35) ~[nukkit.jar:?]
        at cn.nukkit.scheduler.TaskHandler.run(TaskHandler.java:99) [nukkit.jar:?]
        at cn.nukkit.scheduler.ServerScheduler.runTasks(ServerScheduler.java:296) [nukkit.jar:?]
        at cn.nukkit.scheduler.ServerScheduler.mainThreadHeartbeat(ServerScheduler.java:277) [nukkit.jar:?]
        at cn.nukkit.Server.tick(Server.java:1132) [nukkit.jar:?]
        at cn.nukkit.Server.tickProcessor(Server.java:903) [nukkit.jar:?]
        at cn.nukkit.Server.start(Server.java:880) [nukkit.jar:?]
        at cn.nukkit.Server.<init>(Server.java:565) [nukkit.jar:?]
        at cn.nukkit.Nukkit.main(Nukkit.java:112) [nukkit.jar:?]
Caused by: java.lang.NoClassDefFoundError: com/typesafe/config/ConfigFactory
        at me.yakovliam.nkdev.YakoChat.util.HOCONParse.ParseConfig(HOCONParse.java:21) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.util.Settings.SetConfig(Settings.java:26) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.util.ConfigManager.Setup(ConfigManager.java:83) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.YakoChat.configSetup(YakoChat.java:71) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.YakoChat.onEnable(YakoChat.java:42) ~[?:?]
        at cn.nukkit.plugin.PluginBase.setEnabled(PluginBase.java:89) ~[nukkit.jar:?]
        at cn.nukkit.plugin.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:117) ~[nukkit.jar:?]
        at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:439) ~[nukkit.jar:?]
        ... 15 more
Caused by: java.lang.ClassNotFoundException: com.typesafe.config.ConfigFactory
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_221]
        at cn.nukkit.plugin.PluginClassLoader.findClass(PluginClassLoader.java:44) ~[nukkit.jar:?]
        at cn.nukkit.plugin.PluginClassLoader.findClass(PluginClassLoader.java:28) ~[nukkit.jar:?]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_221]
        at me.yakovliam.nkdev.YakoChat.util.HOCONParse.ParseConfig(HOCONParse.java:21) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.util.Settings.SetConfig(Settings.java:26) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.util.ConfigManager.Setup(ConfigManager.java:83) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.YakoChat.configSetup(YakoChat.java:71) ~[?:?]
        at me.yakovliam.nkdev.YakoChat.YakoChat.onEnable(YakoChat.java:42) ~[?:?]
        at cn.nukkit.plugin.PluginBase.setEnabled(PluginBase.java:89) ~[nukkit.jar:?]
        at cn.nukkit.plugin.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:117) ~[nukkit.jar:?]
        at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:439) ~[nukkit.jar:?]
        ... 15 more