Bukkit

Hello

I am having issues with the MySQL every time some one joins the server they get this error

[11:41:05] [Server thread/INFO]: [Essentials] Found new UUID for Cjkinyon. Replacing 02702471-3dc8-3646-995b-8149d308ba7a with d7abeeac-5c6b-4ae2-a36a-f3d5777b96ef
[11:41:05] [Server thread/ERROR]: MySQL error! Attempting to reopen database.
[11:41:05] [Server thread/WARN]: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 3,375,516 milliseconds ago.  The last packet sent successfully to the server was 3,375,523 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
[11:41:05] [Server thread/WARN]:  at sun.reflect.GeneratedConstructorAccessor267.newInstance(Unknown Source)
[11:41:05] [Server thread/WARN]:  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
[11:41:05] [Server thread/WARN]:  at java.lang.reflect.Constructor.newInstance(Unknown Source)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3746)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2509)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2480)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2438)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1381)
[11:41:05] [Server thread/WARN]:  at walrus.tsrizchris.mcdiscordintegrator.RankUpload.onJoinEvent(Unknown Source)
[11:41:05] [Server thread/WARN]:  at sun.reflect.GeneratedMethodAccessor641.invoke(Unknown Source)
[11:41:05] [Server thread/WARN]:  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[11:41:05] [Server thread/WARN]:  at java.lang.reflect.Method.invoke(Unknown Source)
[11:41:05] [Server thread/WARN]:  at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)
[11:41:05] [Server thread/WARN]:  at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[11:41:05] [Server thread/WARN]:  at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500)
[11:41:05] [Server thread/WARN]:  at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.PlayerList.onPlayerJoin(PlayerList.java:346)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.PlayerList.a(PlayerList.java:166)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.LoginListener.b(LoginListener.java:159)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.LoginListener.e(LoginListener.java:57)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.NetworkManager.a(NetworkManager.java:233)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.ServerConnection.c(ServerConnection.java:140)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:845)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679)
[11:41:05] [Server thread/WARN]:  at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577)
[11:41:05] [Server thread/WARN]:  at java.lang.Thread.run(Unknown Source)
[11:41:05] [Server thread/WARN]: Caused by: java.net.SocketException: Software caused connection abort: socket write error
[11:41:05] [Server thread/WARN]:  at java.net.SocketOutputStream.socketWrite0(Native Method)
[11:41:05] [Server thread/WARN]:  at java.net.SocketOutputStream.socketWrite(Unknown Source)
[11:41:05] [Server thread/WARN]:  at java.net.SocketOutputStream.write(Unknown Source)
[11:41:05] [Server thread/WARN]:  at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
[11:41:05] [Server thread/WARN]:  at java.io.BufferedOutputStream.flush(Unknown Source)
[11:41:05] [Server thread/WARN]:  at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3728)
[11:41:05] [Server thread/WARN]:  ... 24 more
[11:41:05] [Server thread/INFO]: Cjkinyon[/120.148.93.246:65014] logged in with entity id 141027 at ([world]950.5, 237.0, 624.5)

I contact the host they are saying its a plugin issues please help