Intermittent Error on Build

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It's more difficult to complete my work]
I am getting an intermittent error on building my solution and the error states that a sepcific css file is missing but when i check it does exist on disk. The following is the error in the Error Window of Visual Studio...

Severity Code Description Project File Line Suppression State Details
Error (active) System.InvalidOperationException: No file exists for the asset at either location 'wwwroot\css\dx-reporting-skeleton-screen.css' or 'wwwroot\css\dx-reporting-skeleton-screen.css'.
at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.ComputeFingerprintAndIntegrity(String identity, String originalItemSpec)
at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssets.Execute() Opg.Business.Web.Ui.Realty.Portal C:\Program Files\dotnet\sdk\9.0.100-preview.5.24307.3\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.targets 597

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Original Comments

Feedback Bot on 7/24/2024, 07:06 PM:

(private comment, text removed)

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Original Solutions

(no solutions)

[halter73]

@javiercn FYI

[javiercn]

@halter73 this likely means the file is being added/deleted as part of the build process at the wrong time, hence sometimes its there, sometimes it isn't.

[ray440]

This is happening to me too.

System.InvalidOperationException: No file exists for the asset at either location 'wwwroot\foo.js' or 'wwwroot\foo.js'.
   at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.ComputeFingerprintAndIntegrity(String identity, String originalItemSpec)
   at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssets.Execute()

Edit: looks like VS was not compiling ts -> js files. Seems to be fixed now.

[drmcclelland]

This started happening to me as well after .NET 9 was released. I upgraded to Visual Studio 2022 v17.12.0, and tried compiling a .NET 8 ASP.NET MVC Core project (which started being compiled by the latest .NET 9 SDK):

C:\Program Files\dotnet\sdk\9.0.100\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.targets(662,5): error : System.InvalidOperationException: No file exists for the asset at either location 'wwwroot\css\multiStepIndicator.min.css' or 'wwwroot\css\multiStepIndicator.min.css'.
C:\Program Files\dotnet\sdk\9.0.100\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.targets(662,5): error :    at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.ComputeFingerprintAndIntegrity(String identity, String originalItemSpec)
C:\Program Files\dotnet\sdk\9.0.100\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.targets(662,5): error :    at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssets.Execute()

Workaround:

1. I downloaded the latest .NET 8 SDK (as of now v8.0.404)
2. Added a global.json at the root level of my C# solution with the following content:

{
  "sdk": {
    "version": "8.0.404",
    "rollForward": "latestPatch"
  }
}

[sandeepksharma15]

{
"sdk": {
"version": "8.0.404",
"rollForward": "latestPatch"
}
}

This solution works! As long as the right SDK is installed on the system :-) Thanks

[fmir864]

I can confirm this happening again after VS 17.12 update. @drmcclelland solution fixed.