From 63a88682ce21cf7a275990163c949172ada11aec Mon Sep 17 00:00:00 2001
From: Brianna <bri@songoda.com>
Date: Sat, 1 Feb 2020 07:14:18 -0500
Subject: [PATCH] Require not null bosses.

---
 .../Core/src/com/songoda/epicbosses/holder/ActiveBossHolder.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/plugin-modules/Core/src/com/songoda/epicbosses/holder/ActiveBossHolder.java b/plugin-modules/Core/src/com/songoda/epicbosses/holder/ActiveBossHolder.java
index 4ae0a3b..cf4a132 100644
--- a/plugin-modules/Core/src/com/songoda/epicbosses/holder/ActiveBossHolder.java
+++ b/plugin-modules/Core/src/com/songoda/epicbosses/holder/ActiveBossHolder.java
@@ -105,6 +105,7 @@ public class ActiveBossHolder implements IActiveHolder {
 
         // grab list of all valid entities by UUID that can be removed
         Map<Integer, Entity> toRemove = this.livingEntityMap.entrySet().stream()
+                .filter(Objects::nonNull) // This may fix ticket #4522
                 .collect(Collectors.toMap(Map.Entry::getKey, e -> ServerUtils.get().getEntity(e.getValue())))
                 .entrySet().stream()
                 .filter(e -> e.getValue() != null && e.getValue().getWorld().isChunkLoaded(