[16:51:43 WARN]: [ModelEngine] Plugin ModelEngine vR4.0.3 generated an exception while executing task 17
java.util.ConcurrentModificationException: null
        at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1486) ~[?:?]
        at java.util.TreeMap$ValueIterator.next(TreeMap.java:1531) ~[?:?]
        at java.lang.Iterable.forEach(Iterable.java:74) ~[?:?]
        at com.ticxo.modelengine.core.animation.handler.StateMachineHandler.prepare(StateMachineHandler.java:165) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.core.model.ActiveModelImpl.tick(ActiveModelImpl.java:119) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.core.model.ModeledEntityImpl.tick(ModeledEntityImpl.java:109) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.api.model.ModelUpdater.updateAllModels(ModelUpdater.java:35) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.api.utils.ticker.DualTicker.lambda$queueRepeatingAsyncTask$5(DualTicker.java:55) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.api.utils.ticker.Task.tick(Task.java:25) ~[ModelEngine-4.0.3.jar:?]
        at java.util.ArrayList.removeIf(ArrayList.java:1672) ~[?:?]
        at java.util.ArrayList.removeIf(ArrayList.java:1660) ~[?:?]
        at com.ticxo.modelengine.api.utils.ticker.PseudoThread.tick(PseudoThread.java:50) ~[ModelEngine-4.0.3.jar:?]
        at com.ticxo.modelengine.api.utils.ticker.PseudoThread$1.run(PseudoThread.java:31) ~[ModelEngine-4.0.3.jar:?]
        at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.20.1.jar:git-Paper-196]
        at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.20.1.jar:git-Paper-196]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.20.1.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
        at java.lang.Thread.run(Thread.java:1589) ~[?:?]