Error Unable to Initialize Unity Engine & not found class AssetPackManagerFactory

[firdiansyah-ramadhan-programmer]

So this is the AAB result structure like (*i toggle SplitBaseModuleAssets to true, so it has base_asset)

i've tried to convert it to APK and the game running just fine, but as we are using PAD the asset are not loaded
but when i upload it to playstore, and install it, it shows Error Unable to Initialize Unity Engine

no error >.< from unity, the only error is this

Request to PGS failed because all packs are unavailable.

this is the code im using for testing, but it's not even entering the game :(, because failed initialize unity

using Khepri.AssetDelivery;
using MyCompany.AddressableManager;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AddressableAssets;
using UnityEngine.UI;

public class MOCK_TestPAD : MonoBehaviour
{

    [SerializeField]
    Image image;

    [Header("onDemand")]
    [SerializeField]
    Button onDemand;
    [SerializeField]
    AssetReferencePS<Sprite> onDemandReference;
    [Header("installTime")]
    [SerializeField]
    Button installTime;
    [SerializeField]
    AssetReferencePS<Sprite> installTimeReference;

    [Header("fastFollow")]
    [SerializeField]
    Button fastFollow;
    [SerializeField]
    AssetReferencePS<Sprite> fastFollowReference;


    // Start is called before the first frame update
    async void Start()
    {
        onDemand.onClick.AddListener(UpdateDemand);
        installTime.onClick.AddListener(UpdateInstall);
        fastFollow.onClick.AddListener(UpdateFastFollow);
        Addressables.InitializeAsync();
    }

    // Update is called once per frame
    async void UpdateDemand()
    {
        if (onDemandReference.IsLoading)
        {
            UnityEngine.Debug.Log("Asset OnLoading");
            return;
        }

        Sprite sprite = await onDemandReference.LoadAssetAsync();
        image.sprite = sprite;
    }

    async void UpdateInstall()
    {
        if (installTimeReference.IsLoading)
        {
            UnityEngine.Debug.Log("Asset OnLoading");
            return;
        }

        Sprite sprite = await installTimeReference.LoadAssetAsync();
        image.sprite = sprite;
    }

    async void UpdateFastFollow()
    {
        if (fastFollowReference.IsLoading)
        {
            UnityEngine.Debug.Log("Asset OnLoading");
            return;
        }

        Sprite sprite = await fastFollowReference.LoadAssetAsync();
        image.sprite = sprite;
    }
}

[firdiansyah-ramadhan-programmer]

im removing fast follow and install time, and the game is working

but on demand download still not working, this is the error

2022/11/04 10:12:14.394 31038 31064 Error Unity UnityEngine.AndroidJavaException: java.lang.ClassNotFoundException: com.google.android.play.core.assetpacks.AssetPackManagerFactory
2022/11/04 10:12:14.394 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.CheckException () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.FindClass (System.String name) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at UnityEngine.AndroidJavaClass._AndroidJavaClass (System.String className) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.AssetPackManager..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.PlayAssetDeliveryInternal..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at Google.Play.AssetDelivery.PlayAssetDelivery.get_Instance () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at Google.Play.AssetDelivery.PlayAssetDelivery.RetrieveAssetPackAsync (System.String assetPackName) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.394 31038 31064 Error Unity   at Khepri.AssetDelivery.ResourceH
2022/11/04 10:12:14.397 31038 31064 Error Unity OperationException : GroupOperation failed because one of its dependencies failed
2022/11/04 10:12:14.397 31038 31064 Error Unity UnityEngine.AndroidJavaException: java.lang.ClassNotFoundException: com.google.android.play.core.assetpacks.AssetPackManagerFactory
2022/11/04 10:12:14.397 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.CheckException () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.FindClass (System.String name) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at UnityEngine.AndroidJavaClass._AndroidJavaClass (System.String className) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.AssetPackManager..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.PlayAssetDeliveryInternal..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at Google.Play.AssetDelivery.PlayAssetDelivery.get_Instance () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.397 31038 31064 Error Unity   at Google.Play.AssetDelivery.PlayAssetDelivery.RetrieveAssetPackAsync (System.String assetPackName) [0x0
2022/11/04 10:12:14.400 31038 31064 Error Unity System.Exception: Dependency Exception ---> UnityEngine.ResourceManagement.Exceptions.OperationException: GroupOperation failed because one of its dependencies failed ---> UnityEngine.AndroidJavaException: java.lang.ClassNotFoundException: com.google.android.play.core.assetpacks.AssetPackManagerFactory
2022/11/04 10:12:14.400 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.CheckException () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at UnityEngine.AndroidJNISafe.FindClass (System.String name) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at UnityEngine.AndroidJavaClass._AndroidJavaClass (System.String className) [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.AssetPackManager..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at Google.Play.AssetDelivery.Internal.PlayAssetDeliveryInternal..ctor () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at Google.Play.AssetDelivery.PlayAssetDelivery.get_Instance () [0x00000] in <00000000000000000000000000000000>:0 
2022/11/04 10:12:14.400 31038 31064 Error Unity   at Google.Play

[firdiansyah-ramadhan-programmer]

FINALLY I MAKE IT WORKS!

[firdiansyah-ramadhan-programmer]

so the culprit was actually Proguard
it is removing some unused class from game, play asset delivery package actually provide proguard files, but it is not included in gradle

.
gradle only include this files

.
so i make my own script to generate combined proguard files

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEditor;
using Google.Android.AppBundle.Editor.Internal;

public class ProguardBuilder
{
    const string proguardFolderName = "Proguard";
    const string proguardFileExtension = ".txt";
    const string proguardDefaultValue = "# This file is Auto Generated by `ProguardBuilder.cs`\n# Build using `Google/Update Proguard Files` options\n";

    [MenuItem("Google/Update Proguard Files",false, 102)]
    public static void UpdateProguard() 
    {
        string defaultProguardLocation = "/Plugins/Android/proguard-user.txt";
        string defaultLocation = Application.dataPath + defaultProguardLocation;
        if (!File.Exists(defaultLocation))
        {
            string message = "Default `proguard-user.txt` doesn't exist, please enable custom proguerd files on ProjectSettings>Player>Publishing Settings>Custom Progruard File";
            Debug.LogError(message);
            EditorUtility.DisplayDialog("Error", message,"Ok");
        }
        else
        {
            string prevFile = File.ReadAllText(defaultLocation);
            if (prevFile.Length > 0)
            {
                if (!EditorUtility.DisplayDialog("Warning", "You're trying to delete current proguard file, are you sure?", "Yes, Generate New One", "No, Cancel")) 
                {
                    return;
                }
            }


            string outputFile = proguardDefaultValue;

            string[] subDirr = Directory.GetDirectories(Application.dataPath , "*" , SearchOption.AllDirectories);
            float progress = 0;
            foreach (var dir in subDirr)
            {
                progress += 1;
                EditorUtility.DisplayProgressBar("Loading", "Find all proguard directory", progress / subDirr.Length);

                if (proguardFolderName == Path.GetFileName(dir))
                {
                    string[] files = Directory.GetFiles(dir);
                    foreach (var file in files)
                    {
                        if (Path.GetExtension(file) == proguardFileExtension)
                        {
                            Debug.Log($"implement proguard : {file}");
                            outputFile += $"\n\n##### > {Path.GetFileName(file)} \n{File.ReadAllText(file)}";
                        }   
                    }
                }
            }

            EditorUtility.ClearProgressBar();

            Debug.Log($"Overwriting : {defaultLocation}\n{outputFile}");
            File.WriteAllText(defaultLocation, outputFile);

            AssetDatabase.Refresh();
        }
    }
}

[firdiansyah-ramadhan-programmer]

for the usage, you can just click this menu item

.
then all proguard files, that inside Proguard folder will merged into 1 script