Blazor wasm pwa dependency injection error after publishing

We have a Blazor WASM PWA app that we're publishing locally for testing (standalone app, without any backend on the same site):

dotnet publish "$directorypath\Demo.Web.csproj" -c Release -o $destination

Publishing seems to go fine, but when we try to load the site, we end up getting the following error:

blazor.webassembly.js:1 System.AggregateException: AggregateException_ctor_DefaultMessage (TrimmingAnnotationsDoNotMatch_NewConstraint, MyHelper`1, IMyHelper`1)
 ---> System.ArgumentException: TrimmingAnnotationsDoNotMatch_NewConstraint, Helpers.FluentValidationEditContext`1, Helpers.IFluentValidationEditContext`1
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.ValidateTrimmingAnnotations(Type , Type[] , Type , Type[] )
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.Populate()
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory..ctor(ICollection`1 )
   at Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor(ICollection`1 , ServiceProviderOptions )
   at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection , ServiceProviderOptions )
   at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection , Boolean )
   at Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostBuilder.<>c__DisplayClass5_0.<.ctor>b__0()
   at Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostBuilder.Build()
   at Program.<Main>$(String[] args)
   Exception_EndOfInnerExceptionStack
callEntryPoint @ blazor.webassembly.js:1

Any idea on what's going on here? The app runs fine from the cmd line.

Thanks

Solution

Well, the issue was that the generic interface and its implementation didn't have the same restrictions applied to the generic type parameter T.