None of the constructors found with 'Autofac.Core.Activators .Reflection.DefaultConstructorFinder' on type

I suspect your issue could be related to using IDataContext :

    public class SamuraiDataService : ISamuraiDataService
    {
        private readonly IDataContext _dataContext;

        public SamuraiDataService(IDataContext dataContext)
        {
            _dataContext = dataContext;
        }

Look at
\Plugins\Nop.Plugin.Shipping.FixedByWeightByTotal\Services\ShippingByWeightByTotalService.cs
You should probably be using IRepository

  protected readonly IRepository<ShippingByWeightByTotalRecord> _sbwtRepository;

so instead of using idatacontext I use IRepository? Thanks for your attention buddy, I've been trying to solve this error for days now

New York wrote:

THANK YOUU, YOU LITERALY SAVE ME !!!