It's really hard to tell what's wrong here, especially since the code posted doesn't even compile. Do you have any more details on the registered services? Preferably a runnable repro?

this is the registraticon the problem is when i register IEntityService the exception i get is A suitable constructor for type 'Plutus.QuickPay.Application.Nbg.TenantConsentsServiceWithCache' could not be located. Ensure the type is concrete and all parameters of a public constructor are either registered as services or passed as arguments. Also ensure no extraneous arguments are provided.
I ll try to give you an executable to reproduce it

ProblemWithscruptor.zip
i give you this sample project that it works with 4.2.2 and not in 5.0.1

I am also running into this issue as well with 5.01 ... dozens of my registrations using Decorate (or TryDecorate) throw this error now. 😭 Reverting back to 4.2.2 in the meantime.

I had the same problem. I used dummy handler to show the problem

        services.Decorate(typeof(INotificationHandler<>), typeof(DummyHandlerDecorator<>));

.
.
.

public sealed class DummyHandlerDecorator<TNotification> : INotificationHandler<TNotification>
        where TNotification : INotification
{
    public DummyHandlerDecorator()
    {
        
    }

    public async Task Handle(TNotification notfication, CancellationToken cancellationToken)
    {
        await Task.Delay(1000);
    }
}

I got an error stating that no suitable constructor was found, even when I used an empty one.

Mb this will help you to find the real problem.

I have the same issue ;/