Error on player leave

[cafestifflered]

[15:06:26 ERROR]: Could not pass event PlayerQuitEvent to AbbaCaving v0.1-ALPHA
java.lang.NullPointerException: Cannot invoke "com.gamersafer.minecraft.abbacaving.game.GamePlayer$GameStats.game()" because the return value of "com.gamersafer.minecraft.abbacaving.game.GamePlayer.gameStats()" is null
        at com.gamersafer.minecraft.abbacaving.listeners.PlayerListener.onPlayerQuit(PlayerListener.java:151) ~[AbbaCaving-0.1-ALPHA-all.jar:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor528.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:77) ~[paper-api-1.19.3-R0.1-SNAPSHOT.jar:?]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[paper-api-1.19.3-R0.1-SNAPSHOT.jar:git-Paper-431]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-api-1.19.3-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54) ~[paper-1.19.3.jar:git-Paper-431]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:126) ~[paper-1.19.3.jar:git-Paper-431]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:615) ~[paper-api-1.19.3-R0.1-SNAPSHOT.jar:?]
        at net.minecraft.server.players.PlayerList.remove(PlayerList.java:578) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.players.PlayerList.remove(PlayerList.java:563) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.onDisconnect(ServerGamePacketListenerImpl.java:2119) ~[?:?]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.onDisconnect(ServerGamePacketListenerImpl.java:2098) ~[?:?]
        at net.minecraft.network.Connection.handleDisconnection(Connection.java:777) ~[?:?]
        at net.minecraft.server.network.ServerConnectionListener.tick(ServerConnectionListener.java:253) ~[?:?]
        at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1565) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:447) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1397) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1173) ~[paper-1.19.3.jar:git-Paper-431]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:316) ~[paper-1.19.3.jar:git-Paper-431]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
[15:06:30 INFO]: UUID of player stifflered is 3f03fc68-870c-45c2-94e9-ae670bad9195