C:\Users\rich\app>dotnet --version
6.0.100
C:\Users\rich\app>dotnet --info | findstr RID
 RID:         win10-arm64
C:\Users\rich\app>type app.csproj | findstr pdb
    <DebugType>pdbonly</DebugType>
C:\Users\rich\app>dotnet build
Microsoft (R) Build Engine version 17.0.0+c9eb9dd64 for .NET
Copyright (C) Microsoft Corporation. All rights reserved.

  Determining projects to restore...
  All projects are up-to-date for restore.
CSC : error CS0041: Unexpected error writing debug information -- 'An attempt was made to load a program with an incorrect format. (0x8007000B)' [C:\Users\rich\app\app.csproj]

Build FAILED.