Missed files.

Source/Game/Maps/Instances/InstanceLockManager.cs

@@ -25,15 +25,8 @@ using System.Collections.Generic;
 
 namespace Game.Maps
 {
-    //#define INSTANCE_ID_HIGH_MASK   0x1F440000
-    //#define INSTANCE_ID_LFG_MASK    0x00000001
-    //#define INSTANCE_ID_NORMAL_MASK 0x00010000
-
     using InstanceLockKey = Tuple<uint, uint>;
 
-    //using PlayerLockMap = std::unordered_map<InstanceLockKey, std::unique_ptr<InstanceLock>>;
-    //using LockMap = std::unordered_map<ObjectGuid, PlayerLockMap>;
-
     public class InstanceLockManager : Singleton<InstanceLockManager>
     {
         object _lockObject = new();
@@ -194,6 +187,9 @@ namespace Game.Maps
                 instanceLock = new InstanceLock(entries.MapDifficulty.MapID, (Difficulty)entries.MapDifficulty.DifficultyID,
                     GetNextResetTime(entries), 0);
 
+            if (!_temporaryInstanceLocksByPlayer.ContainsKey(playerGuid))
+                _temporaryInstanceLocksByPlayer[playerGuid] = new Dictionary<InstanceLockKey, InstanceLock>();
+
             _temporaryInstanceLocksByPlayer[playerGuid][entries.GetKey()] = instanceLock;
             Log.outDebug(LogFilter.Instance, $"[{entries.Map.Id}-{entries.Map.MapName[Global.WorldMgr.GetDefaultDbcLocale()]} | " +
                 $"{entries.MapDifficulty.DifficultyID}-{CliDB.DifficultyStorage.LookupByKey(entries.MapDifficulty.DifficultyID).Name}] Created new temporary instance lock for {playerGuid} in instance {instanceId}");

Source/Game/Maps/Instances/InstanceScript.cs

@@ -155,7 +155,7 @@ namespace Game.Maps
         void LoadDungeonEncounterData(uint bossId, uint[] dungeonEncounterIds)
         {
             if (bossId < bosses.Count)
-                for (int i = 0; i < MapConst.MaxDungeonEncountersPerBoss; ++i)
+                for (int i = 0; i < dungeonEncounterIds.Length && i < MapConst.MaxDungeonEncountersPerBoss; ++i)
                     bosses[bossId].DungeonEncounters[i] = CliDB.DungeonEncounterStorage.LookupByKey(dungeonEncounterIds[i]);
         }