Error occurred while enabling LootChest v2.3.3 (Is it up to date?)
java.lang.IllegalArgumentException: No enum constant org.bukkit.Material.SOUL_LANTERN
        at java.lang.Enum.valueOf(Enum.java:238) ~[?:1.8.0_301]
        at org.bukkit.Material.valueOf(Material.java:85) ~[patched_1.15.2.jar:git-Paper-391]
        at fr.black_eyes.lootchest.Mat.init_materials(Mat.java:102) ~[?:?]
        at fr.black_eyes.lootchest.Main.onEnable(Main.java:110) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:380) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:483) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:472) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:386) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:488) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:298) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:909) ~[patched_1.15.2.jar:git-Paper-391]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_301]
[22:22:45 INFO]: [LootChest] Disabling LootChest v2.3.3
[22:22:45 ERROR]: Error occurred while disabling LootChest v2.3.3 (Is it up to date?)
java.lang.NullPointerException: null
        at fr.black_eyes.lootchest.Files.saveData(Files.java:32) ~[?:?]
        at fr.black_eyes.lootchest.Utils.updateData(Utils.java:555) ~[?:?]
        at fr.black_eyes.lootchest.Main.onDisable(Main.java:61) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:415) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:516) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:384) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:483) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:472) ~[patched_1.15.2.jar:git-Paper-391]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:386) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:488) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:298) ~[patched_1.15.2.jar:git-Paper-391]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:909) ~[patched_1.15.2.jar:git-Paper-391]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_301]