Mysql load constrraint

[Narimm]

2019-01-07 18:11:32 [Server thread/WARN]: java.sql.SQLException: Cannot add foreign key constraint
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3978)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3914)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2530)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2495)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1903)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2124)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2058)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5158)
2019-01-07 18:11:32 [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2043)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.com.zaxxer.libs.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.com.zaxxer.libs.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.craftconomy3.storage.sql.MySQLEngine.(MySQLEngine.java:98)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.craftconomy3.storage.StorageHandler.(StorageHandler.java:40)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.craftconomy3.Common.initialiseDatabase(Common.java:390)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.craftconomy3.Common.onEnable(Common.java:139)
2019-01-07 18:11:32 [Server thread/WARN]: at com.greatmancode.craftconomy3.tools.interfaces.BukkitLoader.onEnable(BukkitLoader.java:51)
2019-01-07 18:11:32 [Server thread/WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:254)
2019-01-07 18:11:32 [Server thread/WARN]: at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:325)
2019-01-07 18:11:32 [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405)
2019-01-07 18:11:32 [Server thread/WARN]: at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:441)
2019-01-07 18:11:32 [Server thread/WARN]: at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:355)
2019-01-07 18:11:32 [Server thread/WARN]: at net.minecraft.server.v1_13_R2.MinecraftServer.l(MinecraftServer.java:613)
2019-01-07 18:11:32 [Server thread/WARN]: at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:575)
2019-01-07 18:11:32 [Server thread/WARN]: at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:435)
2019-01-07 18:11:32 [Server thread/WARN]: at net.minecraft.server.v1_13_R2.DedicatedServer.init(DedicatedServer.java:316)
2019-01-07 18:11:32 [Server thread/WARN]: at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:791)
2019-01-07 18:11:32 [Server thread/WARN]: at java.lang.Thread.run(Thread.java:748)
2019-01-07 18:11:32 [Server thread/INFO]: Database Manager Loaded!