[00:04:37 WARN]: [AdvancedCrates] Plugin AdvancedCrates v2.8.1 generated an exception while executing task 94454
java.util.ConcurrentModificationException: null
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1597) ~[?:?]
        at java.util.HashMap$KeyIterator.next(HashMap.java:1620) ~[?:?]
        at java.util.AbstractSet.removeAll(AbstractSet.java:175) ~[?:?]
        at me.PM2.AdvancedCrates.animations.contraband.ContrabandAnimationReward.e(ContrabandAnimationReward.java:213) ~[AdvancedCrates-2.8.1.jar:?]
        at me.PM2.AdvancedCrates.animations.contraband.ContrabandAnimationReward.run(ContrabandAnimationReward.java:122) ~[AdvancedCrates-2.8.1.jar:?]
        at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.18.1.jar:git-Paper-148]
        at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.18.1.jar:git-Paper-148]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.18.1.jar:git-Paper-148]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]