update package system

Assets/YooAsset/Runtime/PackageSystem/Operations/Internal/DeserializeManifestOperation.cs

@@ -154,11 +154,14 @@ namespace YooAsset
 						if (Manifest.EnableAddressable)
 						{
 							string location = packageAsset.Address;
+							if (string.IsNullOrEmpty(location) == false)
+							{
 								if (Manifest.AssetPathMapping1.ContainsKey(location))
 									throw new System.Exception($"Location have existed : {location}");
 								else
 									Manifest.AssetPathMapping1.Add(location, packageAsset.AssetPath);
 							}
+						}
 
 						// 填充AssetPathMapping2
 						if (Manifest.IncludeAssetGUID)