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) ~[?:1.7.0_71]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_71]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_71]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_71]
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:343) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2334) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2371) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_71]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_71]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_71]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_71]
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at java.sql.DriverManager.getConnection(DriverManager.java:571) ~[?:1.7.0_71]
        at java.sql.DriverManager.getConnection(DriverManager.java:215) ~[?:1.7.0_71]
        at nl.rutgerkok.betterenderchest.mysql.SQLHandler.getConnection(SQLHandler.java:226) ~[BetterEnderChest.jar:?]
        at nl.rutgerkok.betterenderchest.mysql.SQLHandler.<init>(SQLHandler.java:35) ~[BetterEnderChest.jar:?]
        at nl.rutgerkok.betterenderchest.mysql.BetterEnderSQLCache.<init>(BetterEnderSQLCache.java:50) [BetterEnderChest.jar:?]
        at nl.rutgerkok.betterenderchest.BetterEnderChestPlugin.loadIOServices(BetterEnderChestPlugin.java:493) [BetterEnderChest.jar:?]
        at nl.rutgerkok.betterenderchest.BetterEnderChestPlugin.onEnable(BetterEnderChestPlugin.java:572) [BetterEnderChest.jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:335) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugin(CraftServer.java:355) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.enablePlugins(CraftServer.java:315) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at net.minecraft.server.v1_8_R1.MinecraftServer.q(MinecraftServer.java:402) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at net.minecraft.server.v1_8_R1.MinecraftServer.k(MinecraftServer.java:370) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:325) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:211) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494) [spigot.jar:git-Spigot-b43a31a-20c65ca]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_71]
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method) ~[?:1.7.0_71]
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) ~[?:1.7.0_71]
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) ~[?:1.7.0_71]
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) ~[?:1.7.0_71]
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[?:1.7.0_71]
        at java.net.Socket.connect(Socket.java:579) ~[?:1.7.0_71]
        at java.net.Socket.connect(Socket.java:528) ~[?:1.7.0_71]
        at java.net.Socket.<init>(Socket.java:425) ~[?:1.7.0_71]
        at java.net.Socket.<init>(Socket.java:241) ~[?:1.7.0_71]
        at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:254) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:292) ~[spigot.jar:git-Spigot-b43a31a-20c65ca]
        ... 30 more