authx error

00:50:09 [SEVERE] [xAuth] SQL query failure [read] (SELECT a.*, s.* FROM `accounts` a LEFT JOIN `sessions` s ON a.id = s.accountid WHERE `playername` = ?)
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 785,015 milliseconds ago.  The last packet sent successfully to the server was 1 milliseconds ago.
        at sun.reflect.GeneratedConstructorAccessor151.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
        at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3082)
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2968)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3516)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626)
        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2111)
        at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2273)
        at com.cypherx.xauth.database.Database.queryRead(Database.java:69)
        at com.cypherx.xauth.database.DbUtil.reloadPlayer(DbUtil.java:289)
        at com.cypherx.xauth.xAuth.getPlayerJoin(xAuth.java:231)
        at com.cypherx.xauth.listeners.xAuthPlayerListener.onPlayerJoin(xAuthPlayerListener.java:63)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:260)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:339)
        at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:129)
        at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:121)
        at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:80)
        at net.minecraft.server.Packet1Login.a(SourceFile:59)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:46)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:94)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:471)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
        at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2529)
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2979)
        ... 24 more
00:50:09 [SEVERE] Could not pass event PLAYER_JOIN to xAuth
java.lang.NullPointerException
        at com.cypherx.xauth.database.DbUtil.reloadPlayer(DbUtil.java:300)
        at com.cypherx.xauth.xAuth.getPlayerJoin(xAuth.java:231)
        at com.cypherx.xauth.listeners.xAuthPlayerListener.onPlayerJoin(xAuthPlayerListener.java:63)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:260)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:339)
        at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:129)
        at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:121)
        at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:80)
        at net.minecraft.server.Packet1Login.a(SourceFile:59)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:46)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:94)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:471)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)