search

mono / mono

Mono open source ECMA CLI, C# and .NET implementation.
https://www.mono-project.com
Other
11.14k stars 3.82k forks source link

WebAssembly: Error when trying to use ML.NET framework with Blazor #10915

Closed lqdev closed 6 years ago

lqdev commented 6 years ago

This issue references issue #1499 in Blazor repo. After trying troubleshooting steps, I was told this would be the best place to post the issue.

Steps to Reproduce

  1. Create Blazor App (standalone)
  2. Reference class library
  3. Visit Blazor page to make ML.NET Predictions

Current Behavior

There is an error output in the web console.

Expected Behavior

Expected behavior

Currently a class library is being referenced in the Blazor application which makes predictions using a pre-trained ML.NET Model. The model is hosted in Azure Storage. The expected behavior is for it to return a string representing the prediction. This solution works in a Console Application.

On which platforms did you notice this

[ ] macOS [ ] Linux [ X] Windows

Version Used:

Stacktrace

WASM: Initialized blazor.webassembly.js:1:31958
WASM: blazor.webassembly.js:1:32013
WASM: Unhandled Exception: blazor.webassembly.js:1:32013
WASM: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MemberAccessException: Cannot create an abstract class: System.Reflection.Emit.DynamicMethod blazor.webassembly.js:1:32013
WASM:   at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&) blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x1a6e588 + 0x00096> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:    --- End of inner exception stack trace --- blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x1a6e588 + 0x000ba> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) <0x1a6e258 + 0x00022> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.ApiUtils.GeneratePeek[TOwn,TRow] (Microsoft.ML.Runtime.Api.InternalSchemaDefinition+Column column) <0x21a0668 + 0x000f2> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils+DataViewBase`1[TRow]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.String name, Microsoft.ML.Runtime.Api.InternalSchemaDefinition schemaDefn) <0x2198af0 + 0x000ec> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils+StreamingDataView`1[TRow]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.Collections.Generic.IEnumerable`1[T] data, Microsoft.ML.Runtime.Api.InternalSchemaDefinition schemaDefn) <0x2198820 + 0x00020> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils.CreateFromEnumerable[TRow] (Microsoft.ML.Runtime.IHostEnvironment env, System.Collections.Generic.IEnumerable`1[T] data, Microsoft.ML.Runtime.Api.SchemaDefinition schemaDefinition) <0x215dd60 + 0x00058> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.BatchPredictionEngine`2[TSrc,TDst]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.IO.Stream modelStream, System.Boolean ignoreMissingColumns, Microsoft.ML.Runtime.Api.SchemaDefinition inputSchemaDefinition, Microsoft.ML.Runtime.Api.SchemaDefinition outputSchemaDefinition) <0x215d7f0 + 0x00036> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.ComponentCreation.CreateBatchPredictionEngine[TSrc,TDst] (Microsoft.ML.Runtime.IHostEnvironment env, System.IO.Stream modelStream, System.Boolean ignoreMissingColumns, Microsoft.ML.Runtime.Api.SchemaDefinition inputSchemaDefinition, Microsoft.ML.Runtime.Api.SchemaDefinition outputSchemaDefinition) <0x215d130 + 0x00044> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.PredictionModel.ReadAsync[TInput,TOutput] (System.IO.Stream stream) <0x1f91628 + 0x00056> in <de9eefdf9e51466c93acc3fbf86a9f7e>:0 blazor.webassembly.js:1:32013
WASM:   at ModelLib.Model.LoadSerializeModel (System.IO.Stream serializedModel) <0x1f90f68 + 0x00026> in <4aa657c316ee4f4aa7fcb58dbfaae765>:0 blazor.webassembly.js:1:32013
WASM:   at ModelLib.Model.MakeSerializedPrediction (System.Byte[] serialModel, ModelLib.IrisData input) <0x1f900c0 + 0x000d0> in <4aa657c316ee4f4aa7fcb58dbfaae765>:0 blazor.webassembly.js:1:32013
WASM:   at MyBlazorApp.Pages.Prediction.predict () <0x1efc930 + 0x000d8> in <7889ac77b41345e69b6488605767213c>:0 blazor.webassembly.js:1:32013
WASM:   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_1 (System.Object state) <0x21d4080 + 0x00014> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at (wrapper delegate-invoke) <Module>.invoke_void_object(object) blazor.webassembly.js:1:32013
WASM:   at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (System.Object state) <0x21d4028 + 0x00026> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at (wrapper delegate-invoke) <Module>.invoke_void_object(object) blazor.webassembly.js:1:32013
WASM:   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) <0x1e40218 + 0x000f8> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) <0x1e3ffb0 + 0x00020> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () <0x21d3fa8 + 0x0004a> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.ThreadPoolWorkQueue.Dispatch () <0x1e3b680 + 0x000ee> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () <0x1e3b270 + 0x00000> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM: [ERROR] FATAL UNHANDLED EXCEPTION: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.MemberAccessException: Cannot create an abstract class: System.Reflection.Emit.DynamicMethod blazor.webassembly.js:1:32013
WASM:   at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&) blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x1a6e588 + 0x00096> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:    --- End of inner exception stack trace --- blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x1a6e588 + 0x000ba> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) <0x1a6e258 + 0x00022> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.ApiUtils.GeneratePeek[TOwn,TRow] (Microsoft.ML.Runtime.Api.InternalSchemaDefinition+Column column) <0x21a0668 + 0x000f2> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils+DataViewBase`1[TRow]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.String name, Microsoft.ML.Runtime.Api.InternalSchemaDefinition schemaDefn) <0x2198af0 + 0x000ec> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils+StreamingDataView`1[TRow]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.Collections.Generic.IEnumerable`1[T] data, Microsoft.ML.Runtime.Api.InternalSchemaDefinition schemaDefn) <0x2198820 + 0x00020> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.DataViewConstructionUtils.CreateFromEnumerable[TRow] (Microsoft.ML.Runtime.IHostEnvironment env, System.Collections.Generic.IEnumerable`1[T] data, Microsoft.ML.Runtime.Api.SchemaDefinition schemaDefinition) <0x215dd60 + 0x00058> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.BatchPredictionEngine`2[TSrc,TDst]..ctor (Microsoft.ML.Runtime.IHostEnvironment env, System.IO.Stream modelStream, System.Boolean ignoreMissingColumns, Microsoft.ML.Runtime.Api.SchemaDefinition inputSchemaDefinition, Microsoft.ML.Runtime.Api.SchemaDefinition outputSchemaDefinition) <0x215d7f0 + 0x00036> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.Runtime.Api.ComponentCreation.CreateBatchPredictionEngine[TSrc,TDst] (Microsoft.ML.Runtime.IHostEnvironment env, System.IO.Stream modelStream, System.Boolean ignoreMissingColumns, Microsoft.ML.Runtime.Api.SchemaDefinition inputSchemaDefinition, Microsoft.ML.Runtime.Api.SchemaDefinition outputSchemaDefinition) <0x215d130 + 0x00044> in <700e03bdc1224020a9c51406f31b73d4>:0 blazor.webassembly.js:1:32013
WASM:   at Microsoft.ML.PredictionModel.ReadAsync[TInput,TOutput] (System.IO.Stream stream) <0x1f91628 + 0x00056> in <de9eefdf9e51466c93acc3fbf86a9f7e>:0 blazor.webassembly.js:1:32013
WASM:   at ModelLib.Model.LoadSerializeModel (System.IO.Stream serializedModel) <0x1f90f68 + 0x00026> in <4aa657c316ee4f4aa7fcb58dbfaae765>:0 blazor.webassembly.js:1:32013
WASM:   at ModelLib.Model.MakeSerializedPrediction (System.Byte[] serialModel, ModelLib.IrisData input) <0x1f900c0 + 0x000d0> in <4aa657c316ee4f4aa7fcb58dbfaae765>:0 blazor.webassembly.js:1:32013
WASM:   at MyBlazorApp.Pages.Prediction.predict () <0x1efc930 + 0x000d8> in <7889ac77b41345e69b6488605767213c>:0 blazor.webassembly.js:1:32013
WASM:   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_1 (System.Object state) <0x21d4080 + 0x00014> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at (wrapper delegate-invoke) <Module>.invoke_void_object(object) blazor.webassembly.js:1:32013
WASM:   at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (System.Object state) <0x21d4028 + 0x00026> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at (wrapper delegate-invoke) <Module>.invoke_void_object(object) blazor.webassembly.js:1:32013
WASM:   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) <0x1e40218 + 0x000f8> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) <0x1e3ffb0 + 0x00020> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () <0x21d3fa8 + 0x0004a> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading.ThreadPoolWorkQueue.Dispatch () <0x1e3b680 + 0x000ee> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
WASM:   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () <0x1e3b270 + 0x00000> in <4995adec482d4649a860872c8ccba266>:0 blazor.webassembly.js:1:32013
ExitStatus: Program terminated with exit(255) mono.js:1:177894

See file of stack trace: blazormlneterror.txt

marek-safar commented 6 years ago

Should be fixed by #10887

lqdev commented 6 years ago

Thanks @marek-safar . Will I be able to get this fix right away in Web Assembly or do I have to wait for the next release of Mono?

marek-safar commented 6 years ago

I expect this to be included in the next Blazor update