Помогите Ошибка в плагине... Не понимаю что это... Помогите!

Всем привет! Купил я значит плагин на ранги, кидаю его в plugins, запускаааааю....ииииии.
Вылазит вот такая блен ошибка... не понимаю что она означает...можно ли её вообще исправить...
и из-за ошибки плагин вообще не работает... Прошу помогите пожалуйста, заранее спасибо!

Сама ошибка:

[20:09:15] [Server thread/INFO]: [DestroyRank] Enabling DestroyRank v3.6.8
[20:09:31] [Server thread/ERROR]: [DestroyRank] SQL Error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_241]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_241]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.Util.getInstance(Util.java:408) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:898) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:887) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:861) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2094) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2019) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:776) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_241]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_241]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at java.sql.DriverManager.getConnection(Unknown Source) ~[?:1.8.0_241]
at java.sql.DriverManager.getConnection(Unknown Source) ~[?:1.8.0_241]
at me.deadanykey.destroyrank.Database.m(o:391) [DestroyRank.jar:?]
at me.deadanykey.destroyrank.Database.<init>(o:284) [DestroyRank.jar:?]
at me.deadanykey.destroyrank.DestroyRank.ALLATORIxDEMO(r:305) [DestroyRank.jar:?]
at me.deadanykey.destroyrank.DestroyRank.onEnable(r:433) [DestroyRank.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:422) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:383) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_241]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_241]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_241]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2186) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2035) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
... 27 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method) ~[?:1.8.0_241]
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[?:1.8.0_241]
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[?:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[?:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.8.0_241]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[?:1.8.0_241]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.8.0_241]
at java.net.Socket.connect(Unknown Source) ~[?:1.8.0_241]
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2186) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2035) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
... 27 more
[20:09:31] [Server thread/ERROR]: Error occurred while enabling DestroyRank v3.6.8 (Is it up to date?)
java.lang.NullPointerException: null
at me.deadanykey.destroyrank.Database.C(o:326) ~[?:?]
at me.deadanykey.destroyrank.Database.ALLATORIxDEMO(o:461) ~[?:?]
at me.deadanykey.destroyrank.Database.<init>(o:195) ~[?:?]
at me.deadanykey.destroyrank.DestroyRank.ALLATORIxDEMO(r:305) ~[?:?]
at me.deadanykey.destroyrank.DestroyRank.onEnable(r:433) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:422) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:383) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]