LoveErrors

[SEVERE] Error occurred while enabling ScoreboardStats v0.5.9 (Is it up to date?)
javax.persistence.PersistenceException: java.sql.SQLException: Unsuccessfully waited [1000] millis for a connection to be returned. No connections are free. You need to Increase the max connections of [20] or look for a connection pool leak using datasource.xxx.capturestacktrace=true
	at com.avaje.ebeaninternal.server.core.DefaultServerFactory.checkDataSource(DefaultServerFactory.java:482)
	at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:170)
	at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:63)
	at com.avaje.ebean.EbeanServerFactory.create(EbeanServerFactory.java:78)
	at com.github.games647.scoreboardstats.ScoreboardStats.setupDatabase(ScoreboardStats.java:156)
	at com.github.games647.scoreboardstats.ScoreboardStats.onEnable(ScoreboardStats.java:75)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:382)
	at net.skycraftmc.PluginManager.PluginManagerPlugin.onCommand(PluginManagerPlugin.java:287)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:190)
	at org.bukkit.craftbukkit.v1_6_R2.CraftServer.dispatchCommand(CraftServer.java:527)
	at net.minecraft.server.v1_6_R2.PlayerConnection.handleCommand(PlayerConnection.java:981)
	at net.minecraft.server.v1_6_R2.PlayerConnection.chat(PlayerConnection.java:892)
	at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:839)
	at net.minecraft.server.v1_6_R2.Packet3Chat.handle(SourceFile:49)
	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:235)
	at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:118)
	at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
	at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:592)
	at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
	at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
	at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
	at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.sql.SQLException: Unsuccessfully waited [1000] millis for a connection to be returned. No connections are free. You need to Increase the max connections of [20] or look for a connection pool leak using datasource.xxx.capturestacktrace=true
	at com.avaje.ebeaninternal.server.lib.sql.PooledConnectionQueue._getPooledConnectionWaitLoop(PooledConnectionQueue.java:333)
	at com.avaje.ebeaninternal.server.lib.sql.PooledConnectionQueue._getPooledConnection(PooledConnectionQueue.java:307)
	at com.avaje.ebeaninternal.server.lib.sql.PooledConnectionQueue.getPooledConnection(PooledConnectionQueue.java:247)
	at com.avaje.ebeaninternal.server.lib.sql.DataSourcePool.getPooledConnection(DataSourcePool.java:653)
	at com.avaje.ebeaninternal.server.lib.sql.DataSourcePool.getConnection(DataSourcePool.java:641)
	at com.avaje.ebeaninternal.server.core.DefaultServerFactory.checkDataSource(DefaultServerFactory.java:472)
	... 25 more