Call Addressables.LoadAssetAsync and WaitForCompletion cause an error.

[develop_91Act]

OS : windows
Unity Version: 2021.3.13f1
addressable: 1.21.1

This is the code that calls Addressables.LoadAssetAsync and WaitForCompletion

and in WaitForCompletion, i got this error from UnityWebRequest, and following this post , i tried to find the exact code to dispose of the web request,

I found that in the addressable source code AssetBundleProvider.cs, there is a Dispose() in WebRequestOperationCompleted been called to that web request before IsAssetBundleDownloaded

after that Dispose(), IsAssetBundleDownloaded continued to check the same UnityWebRequest and got the _unity_self null error.

Any help will be thankful. Can i bypass this error by try-catch without any side-effect?

[xodennisxo]

same issue here with unity2013.3.13 + addressable1.21.1:

ArgumentNullException: Value cannot be null.
Parameter name: _unity_self
UnityEngine.ResourceManagement.Util.UnityWebRequestUtilities.IsAssetBundleDownloaded

[coldlogic]

bump

This issue occurs when loading the first asset from an addressable bundle after running DownloadDependenciesAsync() and releasing its handle. This started happening after the 1.21.15 update.

Unity 2021.3.29f1
Addressables: 1.21.19

[coldlogic]

I have caught the exception in the following way, and it is working as expected.

original:

        public static bool IsAssetBundleDownloaded(UnityWebRequestAsyncOperation op)
        {
#if ENABLE_ASYNC_ASSETBUNDLE_UWR
            var handler = (DownloadHandlerAssetBundle)op.webRequest.downloadHandler;
            if (handler != null && handler.autoLoadAssetBundle)
                return handler.isDownloadComplete;
#endif
            return op.isDone;
        }

modified:

        public static bool IsAssetBundleDownloaded(UnityWebRequestAsyncOperation op)
        {
#if ENABLE_ASYNC_ASSETBUNDLE_UWR
            try
            {
                var handler = (DownloadHandlerAssetBundle)op.webRequest.downloadHandler;
                if (handler != null && handler.autoLoadAssetBundle)
                    return handler.isDownloadComplete;
            }
            catch (Exception e)
            {
                return true;
            }
#endif

            return op == null || op.isDone;
        }

[ZigQ]

Bump.