java.lang.NullPointerException: null
        at com._FabioTNT.PBNPC.NPCSaver.<init>(NPCSaver.java:26) ~[?:?]
        at com._FabioTNT.PBNPC.Main.onEnable(Main.java:15) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:351) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:432) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:464) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:378) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:457) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:274) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:784) [spigot-1.15.2.jar:git-Spigot-8faa8b4-fba9f48]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]