Exception Report: Cannot invoke "io.github.toberocat.core.utility.ObjectPair.getT()" because the return value of "java.util.Map.get(Object)" is null

[ToberoReports]

This stacktrace got automatically reported

Version: 1.18.2-R0.1-SNAPSHOT
Plugin version: 1.1

Stacktrace:

java.lang.NullPointerException: Cannot invoke "io.github.toberocat.core.utility.ObjectPair.getT()" because the return value of "java.util.Map.get(Object)" is null
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.language.Language.unloadPlayer(Language.java:281)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.language.Language.unloadPlayer(Language.java:27)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.dynamic.loaders.PlayerJoinLoader.Disable(PlayerJoinLoader.java:29)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.dynamic.loaders.DynamicLoader.disable(DynamicLoader.java:20)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.MainIF.lambda$onDisable$2(MainIF.java:201)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.callbacks.ExceptionCallback.run(ExceptionCallback.java:8)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.core.utility.Utility.run(Utility.java:147)
	at ImprovedFactionsV1.1.jar//io.github.toberocat.MainIF.onDisable(MainIF.java:190)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:266)
	at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:399)
	at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:578)
	at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:555)
	at org.bukkit.craftbukkit.v1_18_R2.CraftServer.disablePlugins(CraftServer.java:494)
	at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:971)
	at net.minecraft.server.dedicated.DedicatedServer.t(DedicatedServer.java:803)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1270)
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:315)
	at java.base/java.lang.Thread.run(Thread.java:833)