Bug [1.0] Loading Entity Scene failed because the entity header file couldn't be resolved

I'm trying to build an ECS 1.0 game with no success. Everything works when I play it in the editor, but when I build it, it doesn't load my sub-scene and gives me this error.
I've tried building it for Windows as well as iOS, but both have the same issue.
The full log file is in the attachments.

 

I didn't found anything in Editor log, but I downgraded from version 2022.2.0b13 to 2022.2.0b10 and it started working for windows build, I then returned to 2022.2.ob13 and it still worked, so I don't really know what changed. As for iOS, I now have another error when running the build:

Code (CSharp):

1. ArgumentException: Cannot find TypeIndex for type hash 7881543491081840453

 

Set your code stripping level to Minimal (/maybe low). The type is being stripped.

 

I'm having the same problem on Android
Error Unity Loading Entity Scene failed because the entity header file couldn't be resolved.
Works in editor.

 

It is a bug of Entities package. And there are no other errors, the `sceneLoadDir` are always `StreamingAssets`. So the loadding process always fail if your subscene is not in that folder.

View attachment 1147247

The full code is

Code (CSharp):

1. //SceneHeaderUtility.cs: line 357
2. public static void ScheduleHeaderLoadOnEntity(EntityManager EntityManager, Entity sceneEntity, Hash128 sceneGUID, RequestSceneLoaded requestSceneLoaded, Hash128 artifactHash, string sceneLoadDir)
3. {
4.     EntityManager.AddComponentData(sceneEntity, new ResolvedSceneHash { ArtifactHash = artifactHash });
5.     EntityManager.AddComponentData(sceneEntity, CreateRequestSceneHeader(sceneGUID, requestSceneLoaded, artifactHash, sceneLoadDir));
6. }

 

Sorry, I am wrong on this issue. It is cause by my own runtime error in BakeSystem which is not shown in console window. You can find it in

Project/Logs

folder.

 

I have the same problem.
@jennal could you provide more details on what you've found exactly?

 

Just check the logs in

Project/Logs

folder, if there are errors in Worker Thread, it may not show in console, but it is in log files.

This is the main issue of many other issues may cause this problem. When you solve the error in the log, you can try clear cache button. If still not working, try remove

Library

,

obj

,

Logs

folders, and restart your Unity, it will finally work...for a while.

 

Having this problem regularly. Project runs fine but after making some changes to code for about 1/2 hour I get this error until I delete the Library folder....then it works again. No idea what is going on.

 

This bug is killing me. constantly happening with no log file to help me debug and the error changes each time.

 

Anyone facing the Loading Entity Scene failed because the entity header file couldn't be resolved issue:

I've figured out that this issue is rarely related to the problem with the SubScene itself, but instead is cause by the Exception thrown by Burst compilation during the SubScene import. To try and identify the source of the real problem you can:
1. Disable the SubScene in the Hierarchy and run the PlayMode - sometimes it shows the bugs and exceptions that are not show with the SubScene being turned on (such as

GetSingleton() requires that exactly one entity exists that matches this query, but there are {0}

)


2. After getting the Loading Entity Scene failed because the entity header file couldn't be resolved error, go to /Logs folder of your project and open the "AssetImportWorker[0-N].log file.


Type in the "Exception" in the search - you will probably be able to find something like this:



In my case, the compilation exception was caused by incorrectly managing native collections. In yours - it might be smth else. Anyway, you can comment out the problematic code and try building again to check if it indeed is the source of the problem. Hope it helps!

 

Same problem. Trying to load a scene using SceneSystem. It works in Editor, but doesn't work on Android build. I tried to use SceneAssets folder and Scriptable builder. Nothing helps.

I am trying to load a scene using hash128 guid.

I found in logs that when I use SubScene component it loads a scene correctly. But when loading it adds ".entities" after the guid. Log example:

2023.10.09 23:04:05.662 19484 19595 Debug Unity Streamed scene with 1961ms latency from jar:file:///data/app/~~RWHWpovQiJYpnt7szAfLlA==/com.UnityTechnologies.com.unity.template.urpblank-IVvstJ5yno8IeLamiA6DKA==/base.apk!/assets/EntityScenes/1d89734e7f78f7745b69aae862e49a1f.0.entities

But when I'm trying to load my scenes with SceneSystem.LoadSceneAsync with guid, the logs are:

2023.10.09 23:04:18.601 19484 19661 Error Unity Could not open file jar:file:///data/app/~~RWHWpovQiJYpnt7szAfLlA==/com.UnityTechnologies.com.unity.template.urpblank-IVvstJ5yno8IeLamiA6DKA==/base.apk!/assets/EntityScenes/caf342305d65b0e469187d7a3e599aea.entityheader for read

Why there is .entities in the first time and .entityheader in the second? What am I doing wrong?

UPD.
Found the decision.
I put all the subscenes in to my main scene and turned off autoload. And now I can download scenes with guid.
Only subscenes monobehaviour get into a build.