Failed while executing "backup" with id: 3

Support
1

Hello,

I’m trying duplicati for the first time.
I have configured 3 backups, but one of the 3 backups failed.

The error log is as follows.

What the problem is?

=====================================
System.AggregateException: One or more errors occurred. (Error getting response stream (ReadDoneAsync2): ReceiveFailure (Error getting response stream (ReadDoneAsync2): ReceiveFailure) (One or more errors occurred. (Error getting response stream (ReadDoneAsync2): ReceiveFailure))) —> System.AggregateException: Error getting response stream (ReadDoneAsync2): ReceiveFailure (Error getting response stream (ReadDoneAsync2): ReceiveFailure) (One or more errors occurred. (Error getting response stream (ReadDoneAsync2): ReceiveFailure)) —> System.Net.WebException: Error getting response stream (ReadDoneAsync2): ReceiveFailure
at System.Net.WebResponseStream.InitReadAsync (System.Threading.CancellationToken cancellationToken) [0x00107] in :0
at System.Net.WebOperation.Run () [0x001f2] in :0
at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x000b1] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x00118] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.Utility.AsyncHttpRequest.GetResponse () [0x00044] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.JSONWebHelper.GetResponse (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x000c9] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.ReadJSONResponse[T] (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x00000] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.GetJSONData[T] (System.String url, System.Action1[T] setup, System.Action1[T] setupbodyreq) [0x00024] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.PostAndGetJSONData[T] (System.String url, System.Object item, System.String method) [0x00023] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.Backend.Backblaze.B2.List () [0x00069] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Backend.Backblaze.B2.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x0023b] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x001df] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType121[j__TPar] self) [0x00780] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.b__13_0 (<>f__AnonymousType121[<Input>j__TPar] self) [0x007d7] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0
at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x000f2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 --- End of inner exception stack trace --- at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x01048] in <9cab5b8f1b4f49ec980acae8e278968b>:0 --- End of inner exception stack trace --- at CoCoL.ChannelExtensions.WaitForTaskOrThrow (System.Threading.Tasks.Task task) [0x0005d] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 at Duplicati.Library.Main.Operation.BackupHandler.Run (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00009] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Controller+<>c__DisplayClass14_0.<Backup>b__0 (Duplicati.Library.Main.BackupResults result) [0x0004b] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Controller.RunAction[T] (T result, System.String[]& paths, Duplicati.Library.Utility.IFilter& filter, System.Action1[T] method) [0x0026f] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Controller.Backup (System.String inputsources, Duplicati.Library.Utility.IFilter filter) [0x00074] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Server.Runner.Run (Duplicati.Server.Runner+IRunnerData data, System.Boolean fromQueue) [0x00349] in <30a34d71126b48248d040dda634ddad9>:0
—> (Inner Exception #0) System.AggregateException: Error getting response stream (ReadDoneAsync2): ReceiveFailure (Error getting response stream (ReadDoneAsync2): ReceiveFailure) (One or more errors occurred. (Error getting response stream (ReadDoneAsync2): ReceiveFailure)) —> System.Net.WebException: Error getting response stream (ReadDoneAsync2): ReceiveFailure
at System.Net.WebResponseStream.InitReadAsync (System.Threading.CancellationToken cancellationToken) [0x00107] in :0
at System.Net.WebOperation.Run () [0x001f2] in :0
at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x000b1] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x00118] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.Utility.AsyncHttpRequest.GetResponse () [0x00044] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.JSONWebHelper.GetResponse (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x000c9] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.ReadJSONResponse[T] (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x00000] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.GetJSONData[T] (System.String url, System.Action1[T] setup, System.Action1[T] setupbodyreq) [0x00024] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.PostAndGetJSONData[T] (System.String url, System.Object item, System.String method) [0x00023] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.Backend.Backblaze.B2.List () [0x00069] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Backend.Backblaze.B2.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x0023b] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x001df] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType121[j__TPar] self) [0x00780] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.b__13_0 (<>f__AnonymousType121[<Input>j__TPar] self) [0x007d7] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0
at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x000f2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 --- End of inner exception stack trace --- at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x01048] in <9cab5b8f1b4f49ec980acae8e278968b>:0 ---> (Inner Exception #0) System.Net.WebException: Error getting response stream (ReadDoneAsync2): ReceiveFailure at System.Net.WebResponseStream.InitReadAsync (System.Threading.CancellationToken cancellationToken) [0x00107] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.WebOperation.Run () [0x001f2] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x000b1] in :0
at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x00118] in :0
at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in :0
at Duplicati.Library.Utility.AsyncHttpRequest.GetResponse () [0x00044] in :0
at Duplicati.Library.JSONWebHelper.GetResponse (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x000c9] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.ReadJSONResponse[T] (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x00000] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.GetJSONData[T] (System.String url, System.Action1[T] setup, System.Action1[T] setupbodyreq) [0x00024] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.PostAndGetJSONData[T] (System.String url, System.Object item, System.String method) [0x00023] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.Backend.Backblaze.B2.List () [0x00069] in :0
at Duplicati.Library.Backend.Backblaze.B2.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x0023b] in :0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.b__0 () [0x0010a] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x001df] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.b__13_0 (<>f__AnonymousType121[<Input>j__TPar] self) [0x00780] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType121[j__TPar] self) [0x007d7] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x000f2] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 <—

—> (Inner Exception #1) System.AggregateException: One or more errors occurred. (Error getting response stream (ReadDoneAsync2): ReceiveFailure) —> System.Net.WebException: Error getting response stream (ReadDoneAsync2): ReceiveFailure
at System.Net.WebResponseStream.InitReadAsync (System.Threading.CancellationToken cancellationToken) [0x00107] in :0
at System.Net.WebOperation.Run () [0x001f2] in :0
at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x000b1] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x00118] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.Utility.AsyncHttpRequest.GetResponse () [0x00044] in <ae4a5c68f78041539efc9420d056bd22>:0 at Duplicati.Library.JSONWebHelper.GetResponse (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x000c9] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.ReadJSONResponse[T] (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x00000] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.GetJSONData[T] (System.String url, System.Action1[T] setup, System.Action1[T] setupbodyreq) [0x00024] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.JSONWebHelper.PostAndGetJSONData[T] (System.String url, System.Object item, System.String method) [0x00023] in <430fb651568b4158b0aeeaccca31dfe8>:0 at Duplicati.Library.Backend.Backblaze.B2.List () [0x00069] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Backend.Backblaze.B2.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x0023b] in <fb8c929d985941ecb798c075f875ee67>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x001df] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType121[j__TPar] self) [0x00780] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.b__13_0 (<>f__AnonymousType121[<Input>j__TPar] self) [0x007d7] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0
at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x000f2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 --- End of inner exception stack trace --- ---> (Inner Exception #0) System.Net.WebException: Error getting response stream (ReadDoneAsync2): ReceiveFailure at System.Net.WebResponseStream.InitReadAsync (System.Threading.CancellationToken cancellationToken) [0x00107] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.WebOperation.Run () [0x001f2] in <a85c1a570f9a4f9f9c3d2cfa5504e34f>:0 at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x000b1] in :0
at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x00118] in :0
at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in :0
at Duplicati.Library.Utility.AsyncHttpRequest.GetResponse () [0x00044] in :0
at Duplicati.Library.JSONWebHelper.GetResponse (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x000c9] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.ReadJSONResponse[T] (Duplicati.Library.Utility.AsyncHttpRequest req, System.Object requestdata) [0x00000] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.GetJSONData[T] (System.String url, System.Action1[T] setup, System.Action1[T] setupbodyreq) [0x00024] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.JSONWebHelper.PostAndGetJSONData[T] (System.String url, System.Object item, System.String method) [0x00023] in <430fb651568b4158b0aeeaccca31dfe8>:0
at Duplicati.Library.Backend.Backblaze.B2.List () [0x00069] in :0
at Duplicati.Library.Backend.Backblaze.B2.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x0023b] in :0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.b__0 () [0x0010a] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x001df] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.Backup.BackendUploader.b__13_0 (<>f__AnonymousType121[<Input>j__TPar] self) [0x00780] in <9cab5b8f1b4f49ec980acae8e278968b>:0 at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType121[j__TPar] self) [0x007d7] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x000f2] in <9cab5b8f1b4f49ec980acae8e278968b>:0
at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9cab5b8f1b4f49ec980acae8e278968b>:0 <—
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2

Hello

what you are experiencing is a loss of communication with your backend. In an ideal world every possible error would allow software to get a meaningful error code and message that could bring intelligent reporting to the final user (you). Unfortunately the world is not ideal. So the problem could be caused by many different problems that all boil down to the same result: the communication is crashing. Among the reasons: loss of network connectivity (internet provider or router failure), dns problems (the server address is changing and the name change is not caught), bandwidth limitations (your hoster has limits and if you don’t respect them bad things can happen) - there could be other reasons that I don’t think about just now.
Investigate these possible causes, it’s not possible to do that for you.

3

How do they differ? Did failing one ever upload anything? You can view B2 web UI.

If you have 2 that appear to work, that might still be due to default 5 transfer retries:

number-of-retries

If an upload or download fails, Duplicati will retry a number of times before failing. Use this to handle unstable network connections better.

Viewing the log files of a backup job

of the two that completed has RetryAttempts in a Complete log. Is it above zero?
An occasional retry is normal, but if there are a lot, there’s probably a network issue.

Viewing About → Show log → Live → Retry during backup that fails might be useful.
Your trace looks like it failed on list inside the first put, but was there a prior list?
Live log is reverse-chronological, so latest info is at top and you’ll need to look down.