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paulhudgins
Frequent Visitor

Error When trying to Connect to REST API - Block length does not match with its complement

I have tried several methods to connect to an external API using the GetData>Web method and Power Query. In both instances I am receiving the following error when connecting:

 

Unexpected error: Block length does not match with its complement.

 

When I enter the URL into a browser directly I get results returned. From what I can tell this is a error with compression/decompression but I am not sure what I need to do to fix it. Any help would be appreciated. Below are more details:

 

Regards, 

 

Paul

 

Example of Power Query I am using:

 

let

Source = Json.Document(Web.Contents("https://ultraapi.keynote.com/v3/synthetic/table?login=xxxxxxxxxx&pass=ad14c46f3a91b1e8e01b69740fe77b..."))
in
Source

 

 

 

Error Details Returned when executing:

 

Unexpected error: Block length does not match with its complement.
Details:
Microsoft.Mashup.Evaluator.Interface.ErrorException: Block length does not match with its complement. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Block length does not match with its complement. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Block length does not match with its complement. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Block length does not match with its complement. ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Block length does not match with its complement. ---> System.IO.InvalidDataException: Block length does not match with its complement. ---> System.IO.InvalidDataException: Block length does not match with its complement.
at System.IO.Mashup.Compression.Inflater.DecodeUncompressedBlock(Boolean& end_of_block)
at System.IO.Mashup.Compression.Inflater.Decode()
at System.IO.Mashup.Compression.Inflater.Inflate(Byte[] bytes, Int32 offset, Int32 length)
at System.IO.Mashup.Compression.DeflateStream.Read(Byte[] array, Int32 offset, Int32 count)
at Microsoft.Mashup.Engine1.Library.Web.Response.ResponseStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.Mashup.Common.StreamExtensions.ConcatStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at Microsoft.Mashup.Engine1.Library.PersistentCacheExtensions.CachingStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.StreamReader.ReadBuffer(Char[] userBuffer, Int32 userOffset, Int32 desiredChars, Boolean& readToUserBuffer)
at System.IO.StreamReader.Read(Char[] buffer, Int32 index, Int32 count)
at Microsoft.Mashup.Engine1.Library.Json.JsonTokenizer.FillBuffer(Int32 bufferPosition, Int32 minimumCount)
at Microsoft.Mashup.Engine1.Library.Json.JsonModule.Json.DocumentFunctionValue.TypedInvoke(Value jsonText, Value encoding)
at Microsoft.Mashup.Engine1.Runtime.NativeFunctionValue2`3.Invoke(Value arg0, Value arg1)
at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression2.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression2.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)
at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(String field)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)
at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(Value key)
at Microsoft.Mashup.Engine1.Runtime.Library.Linker.BindFunctionValue.TypedInvoke(RecordValue environment, Value section, TextValue name)
at Microsoft.Mashup.Engine1.Runtime.NativeFunctionValue3`4.Invoke(Value arg0, Value arg1, Value arg2)
at Microsoft.Mashup.Engine1.Language.MembersFunctionValue0.Invoke()
at Microsoft.Mashup.Engine1.Language.ListExpression.RuntimeListValue.Force(Int32 index)
at Microsoft.Mashup.Engine1.Language.ListExpression.RuntimeListValue.get_Item(Int32 index)
at Microsoft.Mashup.Engine1.Runtime.ListValue.get_Item(Value key)
at Microsoft.Mashup.Engine1.Language.MembersFunctionValue1.Invoke(Value arg0)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)
at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(String field)
at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression2.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.Expression.ExecuteCondition(Value frame)
at Microsoft.Mashup.Engine1.Language.DebugExpression.ExecuteCondition(Value frame)
at Microsoft.Mashup.Engine1.Language.IfExpression.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)
at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)
at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(String field)
at Microsoft.Mashup.Engine1.Language.MembersFunctionValue0.Invoke()
at Microsoft.Mashup.Engine1.Engine.Microsoft.Mashup.Engine.Interface.IEngine.Invoke(IValue function, IValue[] arguments)
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.BeginGetResult(DocumentEvaluationParameters parameters, Action`1 callback)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.BeginGetResult(DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.BeginGetResult(DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallPartition.BeginGetResult[T](Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallDocumentEvaluator.Evaluation`1.OnBufferComplete(Exception exception)
at Microsoft.Mashup.Evaluator.Firewall.BeginBufferPartitions(Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallDocumentEvaluator.BeginGetResultInternal[T](DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.Interface.IDocumentEvaluatorExtensions.GetResult[T](IDocumentEvaluator`1 evaluator, DocumentEvaluationParameters parameters)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action`1 action)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetPreviewValueSource(IMessageChannel channel, BeginGetPreviewValueSourceMessage message)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.OnMessageWithUnknownChannel(IMessageChannel baseChannel, MessageWithUnknownChannel messageWithUnknownChannel)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.EvaluationHost.Run()
at Microsoft.Mashup.Container.EvaluationContainerMain.Run(Object args)
at Microsoft.Mashup.Evaluator.SafeThread2.<>c__DisplayClass15.<CreateAction>b__14(Object o)
at Microsoft.Mashup.Container.EvaluationContainerMain.SafeRun(String[] args)
at Microsoft.Mashup.Container.EvaluationContainerMain.Main(String[] args)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.<>c__DisplayClass2.<BeginGetResult>b__0(EvaluationResult2`1 result)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.<>c__DisplayClass2.<BeginGetResult>b__0(EvaluationResult2`1 result)
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.BeginGetResult(DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.BeginGetResult(DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallPartition.BeginGetResult[T](Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallDocumentEvaluator.Evaluation`1.OnBufferComplete(Exception exception)
at Microsoft.Mashup.Evaluator.Firewall.BeginBufferPartitions(Action`1 callback)
at Microsoft.Mashup.Evaluator.FirewallDocumentEvaluator.BeginGetResultInternal[T](DocumentEvaluationParameters parameters, Action`1 callback)
at Microsoft.Mashup.Evaluator.Interface.IDocumentEvaluatorExtensions.GetResult[T](IDocumentEvaluator`1 evaluator, DocumentEvaluationParameters parameters)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action`1 action)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetPreviewValueSource(IMessageChannel channel, BeginGetPreviewValueSourceMessage message)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.OnMessageWithUnknownChannel(IMessageChannel baseChannel, MessageWithUnknownChannel messageWithUnknownChannel)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.EvaluationHost.Run()
at Microsoft.Mashup.Container.EvaluationContainerMain.Run(Object args)
at Microsoft.Mashup.Evaluator.SafeThread2.<>c__DisplayClass15.<CreateAction>b__14(Object o)
at Microsoft.Mashup.Container.EvaluationContainerMain.SafeRun(String[] args)
at Microsoft.Mashup.Container.EvaluationContainerMain.Main(String[] args)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.<>c__DisplayClassc.<>c__DisplayClasse.<OnBeginGetPreviewValueSource>b__b()
at Microsoft.Mashup.Evaluator.RemotePreviewValueSource.<>c__DisplayClass5.<RunStub>b__3()
at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Common.SafeExceptions.IgnoreSafeExceptions(IEngineHost host, IHostTrace trace, Action action)
at Microsoft.Mashup.Evaluator.EvaluationHost.TryReportException(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Exception exception)
at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action)
at Microsoft.Mashup.Evaluator.RemotePreviewValueSource.RunStub(IEngineHost engineHost, IMessageChannel channel, Func`1 getPreviewValueSource)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.<>c__DisplayClass1f`1.<OnBeginGetResult>b__1c()
at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action`1 action)
at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetPreviewValueSource(IMessageChannel channel, BeginGetPreviewValueSourceMessage message)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.OnMessageWithUnknownChannel(IMessageChannel baseChannel, MessageWithUnknownChannel messageWithUnknownChannel)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.EvaluationHost.Run()
at Microsoft.Mashup.Container.EvaluationContainerMain.Run(Object args)
at Microsoft.Mashup.Evaluator.SafeThread2.<>c__DisplayClass15.<CreateAction>b__14(Object o)
at Microsoft.Mashup.Container.EvaluationContainerMain.SafeRun(String[] args)
at Microsoft.Mashup.Container.EvaluationContainerMain.Main(String[] args)
--- End of inner exception stack trace ---
at Microsoft.Mashup.Evaluator.EvaluationHost.OnException(IEngineHost engineHost, IMessageChannel channel, ExceptionMessage message)
at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message)
at Microsoft.Mashup.Evaluator.Interface.IMessageChannelExtensions.WaitFor[T](IMessageChannel channel)
at Microsoft.Mashup.Evaluator.RemotePreviewValueSource.PreviewValueSource.WaitFor(Func`1 condition, Boolean disposing)
at Microsoft.Mashup.Evaluator.RemotePreviewValueSource.PreviewValueSource.get_TableSource()
at Microsoft.Mashup.Evaluator.Interface.TracingPreviewValueSource.get_TableSource()
at Microsoft.Mashup.Host.Document.Analysis.PackageDocumentAnalysisInfo.PackagePartitionAnalysisInfo.SetPreviewValue(EvaluationResult2`1 result, Func`1 getStaleSince, Func`1 getSampled)

 

 

1 REPLY 1
Anonymous
Not applicable

Hi @paulhudgins,

The above error is caused by that the data from your REST API is stored as a compressed JSON document, which is recognized as invalid format in Power BI Desktop.

In your scenario, you can use Power Query to retrieve data from your API and use the Binary.Decompress() function to extract the data.

For more details about how to retrieve data from API in Power Query, please review this similar thread.

For more details about how to use Binary.Decompress() function, please review this blog: Working With Compression In Power Query And Power BI Desktop.



Thanks,
Lydia Zhang

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