Onedrive vs Object reference not set to an instanc

Dear,
A bit fighting with backup from OpenMediaVault NAS to Onedrive.
I have several tasks /for several NAS users/ for backup to Onedrive, task are working normally. On Onedrive side it is one account with several folder for separate tasks.

With one task /about 16GB of data / i still have problems. Logs is below.
Also tried to start with empty folder / that task works/, later copy part of data to folder and initated backup tasks again. After several backups it stops with error

System.NullReferenceException: Object reference not set to an instance of an object
at Duplicati.Library.Main.Volumes.BlockVolumeWriter.AddBlock (System.String hash, System.Byte data, System.Int32 offset, System.Int32 size, Duplicati.Library.Interface.CompressionHint hint) [0x00032] in :0
at Duplicati.Library.Main.Operation.Backup.SpillCollectorProcess+<>c__DisplayClass0_0+<b__0>d.MoveNext () [0x003df] in :0
— End of stack trace from previous location where exception was thrown —
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <8f2c484307284b51944a1a13a14c0266>:0
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0004e] in <8f2c484307284b51944a1a13a14c0266>:0
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in <8f2c484307284b51944a1a13a14c0266>:0
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in <8f2c484307284b51944a1a13a14c0266>:0
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0
at CoCoL.AutomationExtensions+d__101[T].MoveNext () [0x0007a] in <6973ce2780de4b28aaa2c5ffc59993b1>:0 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0004e] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.GetResult () [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0 at Duplicati.Library.Main.Operation.BackupHandler+<RunMainOperation>d__12.MoveNext () [0x00349] in <e2da9713f0974e76879d9f9aa7ce0e36>:0 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0004e] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in <8f2c484307284b51944a1a13a14c0266>:0 at System.Runtime.CompilerServices.ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.GetResult () [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0 at Duplicati.Library.Main.Operation.BackupHandler+<RunAsync>d__19.MoveNext () [0x00a43] in <e2da9713f0974e76879d9f9aa7ce0e36>:0 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <8f2c484307284b51944a1a13a14c0266>:0 at CoCoL.ChannelExtensions.WaitForTaskOrThrow (System.Threading.Tasks.Task task) [0x00050] in <6973ce2780de4b28aaa2c5ffc59993b1>:0 at Duplicati.Library.Main.Operation.BackupHandler.Run (System.String[] sources, Duplicati.Library.Utility.IFilter filter) [0x00008] in <e2da9713f0974e76879d9f9aa7ce0e36>:0 at Duplicati.Library.Main.Controller+<>c__DisplayClass13_0.<Backup>b__0 (Duplicati.Library.Main.BackupResults result) [0x00035] in <e2da9713f0974e76879d9f9aa7ce0e36>:0 at Duplicati.Library.Main.Controller.RunAction[T] (T result, System.String[]& paths, Duplicati.Library.Utility.IFilter& filter, System.Action1[T] method) [0x0011d] in :0

System Properties

  • APIVersion : 1
  • PasswordPlaceholder : **********
  • ServerVersion : 2.0.4.23
  • ServerVersionName : - 2.0.4.23_beta_2019-07-14
  • ServerVersionType : Beta
  • StartedBy : Server
  • BaseVersionName : 2.0.3.3_beta_2018-04-02
  • DefaultUpdateChannel : Beta
  • DefaultUsageReportLevel : Information
  • ServerTime : 2019-09-29T19:21:05.658497+02:00
  • OSType : Linux
  • DirectorySeparator : /
  • PathSeparator : :
  • CaseSensitiveFilesystem : true
  • MonoVersion : 4.6.2
  • MachineName : odroidxu4
  • UserName : root
  • NewLine :
  • CLRVersion : 4.0.30319.42000
  • CLROSInfo : {“Platform”:“Unix”,“ServicePack”:"",“Version”:“4.14.144.4”,“VersionString”:“Unix 4.14.144.4”}
  • ServerModules :
  • UsingAlternateUpdateURLs : false
  • LogLevels : [“ExplicitOnly”,“Profiling”,“Verbose”,“Retry”,“Information”,“DryRun”,“Warning”,“Error”]
  • SuppressDonationMessages : false
  • SpecialFolders : [{“ID”:"%MY_DOCUMENTS%",“Path”:"/root"},{“ID”:"%DESKTOP%",“Path”:"/root/Desktop"},{“ID”:"%HOME%",“Path”:"/root"}]
  • BrowserLocale : {“Code”:“sk-SK”,“EnglishName”:“Slovak (Slovakia)”,“DisplayName”:“slovenčina (Slovensko)”}
  • SupportedLocales : [{“Code”:“bn”,“EnglishName”:“Bengali”,“DisplayName”:“বাংলা”},{“Code”:“ca”,“EnglishName”:“Catalan”,“DisplayName”:“català”},{“Code”:“cs”,“EnglishName”:“Czech”,“DisplayName”:“čeština”},{“Code”:“da”,“EnglishName”:“Danish”,“DisplayName”:“dansk”},{“Code”:“de”,“EnglishName”:“German”,“DisplayName”:“Deutsch”},{“Code”:“en”,“EnglishName”:“English”,“DisplayName”:“English”},{“Code”:“es”,“EnglishName”:“Spanish”,“DisplayName”:“español”},{“Code”:“fi”,“EnglishName”:“Finnish”,“DisplayName”:“suomi”},{“Code”:“fr”,“EnglishName”:“French”,“DisplayName”:“français”},{“Code”:“hu”,“EnglishName”:“Hungarian”,“DisplayName”:“magyar”},{“Code”:“it”,“EnglishName”:“Italian”,“DisplayName”:“italiano”},{“Code”:“ja-JP”,“EnglishName”:“Japanese (Japan)”,“DisplayName”:“日本語 (日本)”},{“Code”:“ko”,“EnglishName”:“Korean”,“DisplayName”:“한국어”},{“Code”:“lt”,“EnglishName”:“Lithuanian”,“DisplayName”:“lietuvių”},{“Code”:“lv”,“EnglishName”:“Latvian”,“DisplayName”:“latviešu”},{“Code”:“nl-NL”,“EnglishName”:“Dutch (Netherlands)”,“DisplayName”:“Nederlands (Nederland)”},{“Code”:“pl”,“EnglishName”:“Polish”,“DisplayName”:“polski”},{“Code”:“pt”,“EnglishName”:“Portuguese”,“DisplayName”:“português”},{“Code”:“pt-BR”,“EnglishName”:“Portuguese (Brazil)”,“DisplayName”:“português (Brasil)”},{“Code”:“ro”,“EnglishName”:“Romanian”,“DisplayName”:“română”},{“Code”:“ru”,“EnglishName”:“Russian”,“DisplayName”:“русский”},{“Code”:“sk”,“EnglishName”:“Slovak”,“DisplayName”:“slovenčina”},{“Code”:“sk-SK”,“EnglishName”:“Slovak (Slovakia)”,“DisplayName”:“slovenčina (Slovensko)”},{“Code”:“sv-SE”,“EnglishName”:“Swedish (Sweden)”,“DisplayName”:“svenska (Sverige)”},{“Code”:“th”,“EnglishName”:“Thai”,“DisplayName”:“ไทย”},{“Code”:“zh-CN”,“EnglishName”:“Chinese (Simplified)”,“DisplayName”:“中文 (中国)”},{“Code”:“zh-HK”,“EnglishName”:“Chinese (Traditional, Hong Kong SAR China)”,“DisplayName”:“中文 (中国香港特别行政区)”},{“Code”:“zh-TW”,“EnglishName”:“Chinese (Traditional)”,“DisplayName”:“中文 (台湾)”}]
  • BrowserLocaleSupported : true
  • backendgroups : {“std”:{“ftp”:null,“ssh”:null,“webdav”:null,“openstack”:“OpenStack Object Storage / Swift”,“s3”:“S3 Compatible”,“aftp”:“FTP (Alternative)”},“local”:{“file”:null},“prop”:{“s3”:null,“azure”:null,“googledrive”:null,“onedrive”:null,“onedrivev2”:null,“sharepoint”:null,“msgroup”:null,“cloudfiles”:null,“gcs”:null,“openstack”:null,“hubic”:null,“amzcd”:null,“b2”:null,“mega”:null,“box”:null,“od4b”:null,“mssp”:null,“dropbox”:null,“sia”:null,“jottacloud”:null,“rclone”:null}}
  • GroupTypes : [“Local storage”,“Standard protocols”,“Proprietary”,“Others”]
  • Backend modules: aftp amzcd azure b2 box cloudfiles dropbox ftp file googledrive gcs hubic jottacloud mega msgroup onedrive onedrivev2 sharepoint openstack rclone s3 ssh od4b mssp sia tahoe webdav
  • Compression modules: zip 7z
  • Encryption modules: aes gpg

Thanks for advice