Building blazor dotnet service with buildpack but facing "Unable to resolve WebAssembly runtime pack version"

[Lancelot0105]

I tried building blazor application using buildpack (using dotnet version 8.0.100) but I am getting "Unable to resolve WebAssembly runtime pack version".

Here is the full logs:

Welcome to .NET 8.0!
---------------------
SDK Version: 8.0.100

  Telemetry
  ---------
  The .NET tools collect usage data in order to help us improve your experience. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
  
  Read more about .NET CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry
  
  ----------------
  Installed an [ASP.NET](http://asp.net/) Core HTTPS development certificate.
  To trust the certificate, view the instructions: https://aka.ms/dotnet-https-linux
  
  ----------------
  Write your first app: https://aka.ms/dotnet-hello-world
  Find out what's new: https://aka.ms/dotnet-whats-new
  Explore documentation: https://aka.ms/dotnet-docs
  Report issues and find source on GitHub: https://github.com/dotnet/core
  Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli
  --------------------------------------------------------------------------------------
  MSBuild version 17.8.3+195e7f5a3 for .NET
    Determining projects to restore...
    Restored /workspace/source/code/cap-ui/cap-ui.csproj (in 21.56 sec).
  /workspace/source/code/cap-ui/Components/Reports/DailyReportDialog/DailyReportDialog.razor(75,20): warning BL0007: Component parameter 'Cap.Components.DailyReportDialog.Project' should be auto property [/workspace/source/code/cap-ui/cap-ui.csproj]
  /workspace/source/code/cap-ui/Components/ProjectDialogs/CreateProjectDialog.razor(212,25): warning BL0007: Component parameter 'Cap.Components.CreateProjectDialog.Customer' should be auto property [/workspace/source/code/cap-ui/cap-ui.csproj]
  /workspace/source/code/cap-ui/Components/Common/Chip.razor.cs(38,23): warning BL0007: Component parameter 'Cap.Components.Common.Chip.IconColor' should be auto property [/workspace/source/code/cap-ui/cap-ui.csproj]
  /layers/paketo-buildpacks_dotnet-publish/nuget-cache/microsoft.net.sdk.webassembly.pack/8.0.0/build/Microsoft.NET.Sdk.WebAssembly.Browser.targets(231,5): error WASM0005: Unable to resolve WebAssembly runtime pack version [/workspace/source/code/cap-ui/cap-ui.csproj]
  Failed after 51.87250099s

failed to execute 'dotnet publish': exit status 1

But when I am using dotnet pubslish flag "BP_DOTNET_PUBLISH_FLAGS=--self-contained=true" and the application is getting built but dotnet-core-aspnet-runtime and dotnet-execute is getting participated hence I am getting the below error "failed to find *.runtimeconfig.json: no *.runtimeconfig.json found: file does not exist".