22:17:20 [INFO] KaffeeKapsel [/127.0.0.1:49967] logged in with entity id 367 at
([world] -27.5, 66.0, 252.5)
22:17:20 [SCHWERWIEGEND] java.io.NotSerializableException: org.bukkit.craftbukki
t.entity.CraftPlayer
        - field (class \"de.maniacraft.statsandachievements.utils.Stat\", name: \"p
layer\", type: \"interface org.bukkit.entity.Player\")
        - root object (class \"de.maniacraft.statsandachievements.utils.Stat\", de
.maniacraft.statsandachievements.utils.Stat@5289e2f1)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.writeObject0(Unkno
wn Source)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.defaultWriteFields
(Unknown Source)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.writeSerialData(Un
known Source)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.writeOrdinaryObjec
t(Unknown Source)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.writeObject0(Unkno
wn Source)
22:17:20 [SCHWERWIEGEND]        at java.io.ObjectOutputStream.writeObject(Unknow
n Source)
22:17:20 [SCHWERWIEGEND]        at de.maniacraft.statsandachievements.utils.Stat
.serialize(Stat.java:42)
22:17:20 [SCHWERWIEGEND]        at de.maniacraft.statsandachievements.SaAPlugin.
addStat(SaAPlugin.java:65)
22:17:20 [SCHWERWIEGEND]        at de.maniacraft.statsandachievements.SaAPlugin.
onPlayerJoin(SaAPlugin.java:71)
22:17:20 [SCHWERWIEGEND]        at sun.reflect.NativeMethodAccessorImpl.invoke0(
Native Method)
22:17:20 [SCHWERWIEGEND]        at sun.reflect.NativeMethodAccessorImpl.invoke(U
nknown Source)
22:17:20 [SCHWERWIEGEND]        at sun.reflect.DelegatingMethodAccessorImpl.invo
ke(Unknown Source)
22:17:20 [SCHWERWIEGEND]        at java.lang.reflect.Method.invoke(Unknown Sourc
e)
22:17:20 [SCHWERWIEGEND]        at org.bukkit.plugin.java.JavaPluginLoader$103.e
xecute(JavaPluginLoader.java:1024)
22:17:20 [SCHWERWIEGEND]        at org.bukkit.plugin.RegisteredListener.callEven
t(RegisteredListener.java:57)
22:17:20 [SCHWERWIEGEND]        at org.bukkit.plugin.SimplePluginManager.callEve
nt(SimplePluginManager.java:453)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.ServerConfigurationManag
er.c(ServerConfigurationManager.java:133)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.NetLoginHandler.b(NetLog
inHandler.java:121)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.NetLoginHandler.a(NetLog
inHandler.java:40)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.NetworkListenThread.a(Ne
tworkListenThread.java:61)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.MinecraftServer.w(Minecr
aftServer.java:537)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.MinecraftServer.run(Mine
craftServer.java:435)
22:17:20 [SCHWERWIEGEND]        at net.minecraft.server.ThreadServerApplication.
run(SourceFile:465)