Server Template build error with "UpdateExternallyDefinedStaticWebAssets"

[carldebilly]

Steps

1. Create a new uno application with the following settings:

   dotnet new unoapp -o BuggyApp -platforms "wasm" -renderer "native" -server -vscode False -pwa False
   

   (basically a blank, wasm-only native app with a server part)
2. Open Visual Studio or your preferred IDE
3. Compile the solution

Error:

2>------ Build started: Project: BuggyApp.Server, Configuration: Debug Any CPU ------
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018: The "UpdateExternallyDefinedStaticWebAssets" task failed unexpectedly.
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018: System.InvalidOperationException: No file exists for the asset at either location 'D:\src\Experimentations\BuggyApp\BuggyApp\bin\Debug\net9.0-browserwasm\wwwroot\_framework\BuggyApp.pdb' or 'obj\Debug\net9.0-browserwasm\BuggyApp.pdb'.
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.ResolveFile(String identity, String originalItemSpec)
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.ApplyDefaults()
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.FromV1TaskItem(ITaskItem item)
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.AspNetCore.StaticWebAssets.Tasks.UpdateExternallyDefinedStaticWebAssets.Execute()
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Execute()
2>C:\Program Files\dotnet\sdk\9.0.300\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.References.targets(131,7): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()
2>Done building project "BuggyApp.Server.csproj" -- FAILED.

Versions

Uno.Templates v6.0.67 Dotnet 9.0.300

[Darsh0307]

@carldebilly

I am unable to repro this problem any longer after running on Server with WASM

uno.sdk:- 6.0.83 VS vsix:- 6.0.30.30 VS version:- 17.13.7

Build

  Using "GenerateRuntimeConfigurationFiles" task from assembly "C:\Program Files\dotnet\sdk\9.0.204\Sdks\Microsoft.NET.Sdk\targets\..\tools\net472\Microsoft.NET.Build.Tasks.dll".
1>      Task "GenerateRuntimeConfigurationFiles"
1>      Done executing task "GenerateRuntimeConfigurationFiles".
1>    Target "GenerateShimsAssets" skipped, due to false condition; ('$(PackAsTool)' == 'true' and $(PackAsToolShimRuntimeIdentifiers) != '' ) was evaluated as ('' == 'true' and  != '' ).
1>    Target CopyFilesToOutputDirectory:
1>      Task "Copy"
1>        Copying file from "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\obj\Debug\net9.0-browserwasm\BuggyApp.dll" to "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\bin\Debug\net9.0-browserwasm\BuggyApp.dll".
1>      Done executing task "Copy".
1>      Using "CopyRefAssembly" task from assembly "C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\Roslyn\Microsoft.Build.Tasks.CodeAnalysis.dll".
1>      Task "CopyRefAssembly"
1>        Copying reference assembly from "obj\Debug\net9.0-browserwasm\refint\BuggyApp.dll" to "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\obj\Debug\net9.0-browserwasm\ref\BuggyApp.dll".
1>      Done executing task "CopyRefAssembly".
1>      Task "Message"
1>        BuggyApp -> C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\bin\Debug\net9.0-browserwasm\BuggyApp.dll
1>      Done executing task "Message".
1>      Task "Copy" skipped, due to false condition; ('@(AddModules)' != '') was evaluated as ('' != '').
1>      Task "Copy" skipped, due to false condition; ('$(_SGenDllCreated)'=='true') was evaluated as ('false'=='true').
1>      Task "Copy"
1>        Copying file from "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\obj\Debug\net9.0-browserwasm\BuggyApp.pdb" to "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp\bin\Debug\net9.0-browserwasm\BuggyApp.pdb".
1>      Done executing task "Copy".
1>      Task "Copy" skipped, due to false condition; ('$(_DocumentationFileProduced)'=='true' and '$(CopyDocumentationFileToOutputDirectory)'=='true') was evaluated as ('false'=='true' and 'true'=='true').
1>      Task "Copy" skipped, due to false condition; ('@(IntermediateSatelliteAssembliesWithTargetPath)' != '') was evaluated as ('' != '').
1>      Task "Copy" skipped, due to false condition; ('@(ReferenceComWrappersToCopyLocal)' != '' or '@(ResolvedIsolatedComModules)' != '' or '@(_DeploymentLooseManifestFile)' != '' or '@(NativeReferenceFile)' != '' ) was evaluated as ('' != '' or '' != '' or '' != '' or '' != '' ).
1>      Task "Copy" skipped, due to false condition; ('$(SkipCopyWinMDArtifact)' != 'true' and '@(WinMDExpArtifacts)' != '') was evaluated as ('' != 'true' and '' != '').
1>      Task "Message" skipped, due to false condition; ('$(SkipCopyWinMDArtifact)' != 'true' and '$(_WindowsMetadataOutputPath)' != '') was evaluated as ('' != 'true' and '' != '').
1>    Target "_CopyReferenceOnlyAssembliesForBuild" skipped, due to false condition; ('$(PreserveCompilationReferences)' == 'true') was evaluated as ('false' == 'true').
1>    Target "RunCodeAnalysis" skipped, due to false condition; ('$(RunCodeAnalysisOnThisProject)'=='true') was evaluated as (''=='true').
1>    Target "_UnoGeneratePriMarker" skipped, due to false condition; ('$(GenerateLibraryLayout)' == 'true' AND '$(SDKIdentifier)' != 'Windows') was evaluated as ('' == 'true' AND '' != 'Windows').
1>    Target PrepareForRun:
1>    Target "UnmanagedRegistration" skipped, due to false condition; ('$(RegisterForComInterop)'=='true' and '$(OutputType)'=='library') was evaluated as (''=='true' and 'Exe'=='library').
1>    Target "_CheckForCompileOutputs" skipped. Previously built successfully.
1>    Target "_SGenCheckForOutputs" skipped, due to false condition; ('$(_SGenGenerateSerializationAssembliesConfig)' == 'On' or ('@(WebReferenceUrl)'!='' and '$(_SGenGenerateSerializationAssembliesConfig)' == 'Auto')) was evaluated as ('Off' == 'On' or (''!='' and 'Off' == 'Auto')).
1>    Target _CleanGetCurrentAndPriorFileWrites:
1>      Using "ReadLinesFromFile" task from assembly "Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
1>      Task "ReadLinesFromFile"
1>      Done executing task "ReadLinesFromFile".
1>      Using "ConvertToAbsolutePath" task from assembly "Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
1>      Task "ConvertToAbsolutePath"
1>      Done executing task "ConvertToAbsolutePath".
1>      Using "FindUnderPath" task from assembly "Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
1>      Task "FindUnderPath"
1>        Comparison path is "C:\Users\DarshPatel\Desktop\blank_SErsver\BuggyApp\BuggyApp".
1>      Done executing task "FindUnderPath".
1>      Task "FindUnderPath"
1>        Comparison path is "bin\Debug\net9.0-browserwasm\".
1>      Done executing task "FindUnderPath".
1>      Task "FindUnderPath"
1>        Comparison path is "obj\Debug\net9.0-browserwasm\".
1>      Done executing task "FindUnderPath".
1>      Task "RemoveDuplicates"
1>      Done executing task "RemoveDuplicates".
1>    Target IncrementalClean:
1>      Task "FindUnderPath"
1>        Comparison path is "bin\Debug\net9.0-browserwasm\".
1>      Done executing task "FindUnderPath".
1>      Task "FindUnderPath"
1>        Comparison path is "obj\Debug\net9.0-browserwasm\".
1>      Done executing task "FindUnderPath".
1>      Task "Delete"
1>      Done executing task "Delete".
1>      Task "RemoveDuplicates"
1>      Done executing task "RemoveDuplicates".
1>      Task "WriteLinesToFile"
1>      Done executing task "WriteLinesToFile".
1>    Target "PostBuildEvent" skipped, due to false condition; ('$(PostBuildEvent)' != '' and ('$(RunPostBuildEvent)' != 'OnOutputUpdated' or '$(_AssemblyTimestampBeforeCompile)' != '$(_AssemblyTimestampAfterCompile)')) was evaluated as ('' != '' and ('' != 'OnOutputUpdated' or '' != '')).
1>    Target "GenerateBuildDependencyFile" skipped, due to false condition; ('$(GenerateDependencyFile)' == 'true') was evaluated as ('false' == 'true').
1>    Target "ComputeDependencyFileCompilerOptions" skipped, due to false condition; ('$(PreserveCompilationContext)' == 'true') was evaluated as ('false' == 'true').
1>    Target "GenerateBuildRuntimeConfigurationFiles" skipped. Previously built successfully.
1>    Target CoreBuild:
1>    Target AfterBuild:
1>    Target "_CheckBrowserWorkloadNeededButNotAvailable" skipped, due to false condition; ('$(RuntimeIdentifier)' == 'browser-wasm' and '$(_BrowserWorkloadDisabled)' != 'true' and '$(WasmNativeWorkloadAvailable)' != 'true') was evaluated as ('browser-wasm' == 'browser-wasm' and '' != 'true' and 'true' != 'true').
1>    Target "_ErrorWorkloadDisabledForTFMLessThan6" skipped, due to false condition; ('$(_BrowserWorkloadNotSupportedForTFM)' == 'true') was evaluated as ('' == 'true').
1>    Target "_ErrorDualWasmThreadPropsOn7" skipped, due to false condition; ('$(TargetsNet7)' == 'true' and '$(RuntimeIdentifier)' == 'browser-wasm' and
1>        '$(BrowserWorkloadDisabled)' != 'true' and '$(WasmEnableThreads)' == 'true' and '$(WasmEnablePerfTrace)' == 'true') was evaluated as ('' == 'true' and 'browser-wasm' == 'browser-wasm' and
1>        '' != 'true' and '' == 'true' and '' == 'true').
1>    Target "_CheckForInvalidConfigurationAndPlatform" skipped. Previously built successfully.
1>    Target "_CheckForInvalidConfigurationAndPlatform" skipped. Previously built successfully.
1>    Target "_GenerateWindowUnoIconExtension" skipped. Previously built successfully.
1>    Target "_AddResizetizerWindowIconExtensions" skipped. Previously built successfully.
1>    Target Build:
1>    Target "WasmBuildApp" skipped. Previously built successfully.
1>    Target "CallPublishContainerSdkContainerProfile" skipped, due to false condition; ('$(EnableSdkContainerDebugging)' == 'true' AND '$(SdkContainerPublishOnBuild)' == 'true') was evaluated as ('' == 'true' AND '' == 'true').
1>    Target "_CalculatePostXamarinTelemetry" skipped. Previously built successfully.
1>    Target "_PostXamarinTelemetry" skipped, due to false condition; ('$(_PostXamarinTelemetry)' == 'true') was evaluated as ('' == 'true').
1>    Target "_PackAsBuildAfterTarget" skipped, due to false condition; ('$(GeneratePackageOnBuild)' == 'true' AND '$(IsInnerBuild)' != 'true') was evaluated as ('false' == 'true' AND 'true' != 'true').
1>    Target _CheckContainersPackage:
1>      Task "Warning" skipped, due to false condition; ($(_ContainerPackageIsPresent)
1>              and (
1>                ($(_SdkCanPublishWeb) and $(_IsWebProject)) or
1>                ($(_SdkCanPublishWorker) and $(_IsWorkerProject)) or
1>                ($(_SdkCanPublishConsole) and '$(EnableSdkContainerSupport)' == 'true')
1>              )) was evaluated as (false
1>              and (
1>                (True and true) or
1>                (True and false) or
1>                (True and 'true' == 'true')
1>              )).
1>    Target "DotNetPublish" skipped, due to false condition; ( '$(DeployOnBuild)' == 'true' ) was evaluated as ( '' == 'true' ).
1>
1>    Done building project "BuggyApp.csproj".
1>  Done executing task "MSBuild".
1>Target Build:
1>Target "_PackAsBuildAfterTarget" skipped, due to false condition; ('$(GeneratePackageOnBuild)' == 'true' AND '$(IsInnerBuild)' != 'true') was evaluated as ('false' == 'true' AND '' != 'true').
1>Target _CheckContainersPackage:
1>  Task "Warning" skipped, due to false condition; ($(_ContainerPackageIsPresent)
1>          and (
1>            ($(_SdkCanPublishWeb) and $(_IsWebProject)) or
1>            ($(_SdkCanPublishWorker) and $(_IsWorkerProject)) or
1>            ($(_SdkCanPublishConsole) and '$(EnableSdkContainerSupport)' == 'true')
1>          )) was evaluated as (false
1>          and (
1>            (True and false) or
1>            (True and false) or
1>            (True and '' == 'true')
1>          )).
1>
1>Done building project "BuggyApp.csproj".
1>
1>Build succeeded.
1>    0 Warning(s)
1>    0 Error(s)
1>
1>Time Elapsed 00:00:23.94
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
========== Build completed at 12:20 PM and took 24.578 seconds ==========

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[carldebilly]

Great!!

[ADD-David-Antolin]

This does happen to us with .NET SDK 9.0.300 and Uno SDK 6.0.110. Please reopen.

[jeromelaban]

The bootstrapper 9.0.20 is now on nuget, there's no uno.sdk version yet that includes it but it's possible to override it using <UnoWasmBootstrapVersion>9.0.20</UnoWasmBootstrapVersion> in the .csproj file.