[05:40:12] [Server thread/WARN]: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
[05:40:12] [Server thread/WARN]: SLF4J: Defaulting to no-operation (NOP) logger implementation
[05:40:12] [Server thread/WARN]: SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[05:40:12] [Server thread/WARN]: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: All parts of a PRIMARY KEY must be NOT NULL; if you need NULL in a key, use UNIQUE instead
[05:40:12] [Server thread/WARN]: at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[05:40:12] [Server thread/WARN]: at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[05:40:12] [Server thread/WARN]: at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[05:40:12] [Server thread/WARN]: at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.Util.getInstance(Util.java:408)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:944)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2484)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2079)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2013)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5104)
[05:40:12] [Server thread/WARN]: at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1998)
[05:40:12] [Server thread/WARN]: at com.greatmancode.com.zaxxer.libs.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
[05:40:12] [Server thread/WARN]: at com.greatmancode.com.zaxxer.libs.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
[05:40:12] [Server thread/WARN]: at com.greatmancode.craftconomy3.storage.sql.MySQLEngine.(MySQLEngine.java:83)
[05:40:12] [Server thread/WARN]: at com.greatmancode.craftconomy3.storage.StorageHandler.(StorageHandler.java:40)
[05:40:12] [Server thread/WARN]: at com.greatmancode.craftconomy3.Common.initialiseDatabase(Common.java:397)
[05:40:12] [Server thread/WARN]: at com.greatmancode.craftconomy3.Common.onEnable(Common.java:144)
[05:40:12] [Server thread/WARN]: at com.greatmancode.craftconomy3.tools.interfaces.BukkitLoader.onEnable(BukkitLoader.java:49)
[05:40:12] [Server thread/WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264)
[05:40:12] [Server thread/WARN]: at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337)
[05:40:12] [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403)
[05:40:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381)
[05:40:12] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330)
[05:40:12] [Server thread/WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:422)
[05:40:12] [Server thread/WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:383)
[05:40:12] [Server thread/WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338)
[05:40:12] [Server thread/WARN]: at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272)
[05:40:12] [Server thread/WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545)
[05:40:12] [Server thread/WARN]: at java.lang.Thread.run(Thread.java:748)

Solution here #132