Blazor Web Assembly: Exproting XLSX file causes a PlatformNotSupportedException
Exporting XLSX file in Blazor Web Assembly for .NET 5.0 causes a PlatformNotSupportedException. The issue is logged as a regression in the GitHub repo of ASP .NET Core here: https://github.com/dotnet/aspnetcore/issues/32995. It is a regression in the .NET Framework.