[22:21:04] [Server thread/WARN]: [Orbital-Prison] Task #383 for Orbital-Prison v1.0 generated an exception
java.lang.NullPointerException
	at it.orbitalmc.orbitalprison.staff.StaffPriority.nextRank(StaffPriority.java:78) ~[?:?]
	at it.orbitalmc.orbitalprison.scoreboard.OrbPlaceHolder.replace(OrbPlaceHolder.java:44) ~[?:?]
	at it.orbitalmc.orbitalprison.tasks.ScoreboardTask$UPTask.run(ScoreboardTask.java:99) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) ~[paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:352) [paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:783) [paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [paperspigot.jar:git-PaperSpigot-"4c7641d"]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]