[22:52:22 WARN]: [CivCraft] Plugin CivCraft v1.0.0 generated an exception while executing task 28
java.lang.NullPointerException: null
        at com.avrgaming.civcraft.structure.barracks.Barracks.isBarrackTraining(Barracks.java:305) ~[?:?]
        at com.avrgaming.civcraft.threading.timers.TownHammerTaskTimer.run(TownHammerTaskTimer.java:96) ~[?:?]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81) ~[spigot.jar:git-Spigot-518206a-a5b9c7b]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [spigot.jar:git-Spigot-518206a-a5b9c7b]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_201]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_201]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]