RoseStacker v1.5.32-SNAPSHOT generated an exception while executing task 78

[smscentras]

[05:42:22] [Craft Scheduler Thread - 2825 - RoseStacker/WARN]: [RoseStacker] Plugin RoseStacker v1.5.32-SNAPSHOT generated an exception while executing task 78 java.lang.NullPointerException: Cannot invoke "org.bukkit.inventory.meta.ItemMeta.hasItemName()" because "itemMeta" is null at RoseStacker-1.5.32-SNAPSHOT.jar/dev.rosewood.rosestacker.stack.StackedItem.updateDisplay(StackedItem.java:104) ~[RoseStacker-1.5.32-SNAPSHOT.jar:?] at RoseStacker-1.5.32-SNAPSHOT.jar/dev.rosewood.rosestacker.stack.StackingThread.tryStackItem(StackingThread.java:1088) ~[RoseStacker-1.5.32-SNAPSHOT.jar:?] at RoseStacker-1.5.32-SNAPSHOT.jar/dev.rosewood.rosestacker.stack.StackingThread.stackItems(StackingThread.java:220) ~[RoseStacker-1.5.32-SNAPSHOT.jar:?] at RoseStacker-1.5.32-SNAPSHOT.jar/dev.rosewood.rosestacker.lib.rosegarden.scheduler.RoseScheduler.lambda$wrap$0(RoseScheduler.java:158) ~[RoseStacker-1.5.32-SNAPSHOT.jar:?] at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:86) ~[purpur-1.21.1.jar:1.21.1-2329-803bf62] at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[purpur-1.21.1.jar:1.21.1-2329-803bf62] at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[purpur-1.21.1.jar:?] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?] at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]