Stats Error

2013-01-12 05:00:08 [SEVERE] [Stats] Stats_[MySQL] jdbc:mysql://mysql.envioushost.com:3306/foo
2013-01-12 05:00:08 [SEVERE] [Stats] Stats_[MySQL] SQL exception in open(): Data source rejected establishment of connection,  message from server: "Too many connections".
2013-01-12 05:00:08 [SEVERE] Could not pass event PlayerJoinEvent to Stats vjenkins-Stats-129
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.v1_4_6.PlayerList.c(PlayerList.java:156)
	at net.minecraft.server.v1_4_6.PlayerList.a(PlayerList.java:95)
	at net.minecraft.server.v1_4_6.PendingConnection.d(PendingConnection.java:130)
	at net.minecraft.server.v1_4_6.PendingConnection.c(PendingConnection.java:45)
	at net.minecraft.server.v1_4_6.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:44)
	at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:29)
	at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:598)
	at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
	at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
	at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
	at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NullPointerException
	at nl.lolmewn.stats.Main.executeStatement(Main.java:232)
	at nl.lolmewn.stats.EventListener.login(EventListener.java:200)
	at sun.reflect.GeneratedMethodAccessor228.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)