Fix some crashes

Source/Game/Chat/Commands/NPCCommands.cs

@@ -658,6 +658,7 @@ namespace Game.Chat
                     data.spawnId = guid;
                     data.Id = id;
                     data.spawnPoint.Relocate(chr.GetTransOffsetX(), chr.GetTransOffsetY(), chr.GetTransOffsetZ(), chr.GetTransOffsetO());
+                    data.spawnGroupData = new();
                     // @todo: add phases
 
                     Creature _creature = trans.CreateNPCPassenger(guid, data);

Source/Game/Chat/LanguageManager.cs

@@ -100,7 +100,7 @@ namespace Game.Chat
 
         List<string> FindWordGroup(uint language, uint wordLen)
         {
-            return _wordsMap.LookupByKey(Tuple.Create(language, wordLen));
+            return _wordsMap.LookupByKey(Tuple.Create(language, (byte)wordLen));
         }
 
         public string Translate(string msg, uint language, Locale locale)