Working with Dependency injection in .net core

I am trying to use Dependency injection in following way, however I am getting below error

InvalidOperationException: Unable to resolve service for type '' while attempting to activate ''.

What I am trying to achieve is, I have defined some common methods in generic interface and other methods where data driven logic will differ written down in repository specific interface Like ICustomerRepository.

And from controller these common and specific methods should be called. However as stated I am getting the above error when trying to execute API.

The reason why I kept generic repositories as those should not get added in StartUp.cs as and when added per repository.

So, how can execute generic and non generic methods through repository specific interface ?

Any help on this appreciated !

Below is my code

IGenericRepository.cs

public interface IGenericRepository<TEntity> where TEntity : class
    {
        IEnumerable<TEntity> GetAll();
        TEntity GetById(int id);
        void Create(TEntity entity);
        Task Update(int id, TEntity entity);
        TEntity Delete(int id);
    }

GenericRepository.cs

public class GenericRepository<TEntity> : IGenericRepository<TEntity> where TEntity : class
{
    private readonly DbContext dbContext;

    public GenericRepository(DbContext dbContext)
    {
        this.dbContext = dbContext;
    }

    public void Create(TEntity entity)
    {
        dbContext.Set<TEntity>().Add(entity);
        dbContext.SaveChanges();
    }

    public TEntity Delete(int id)
    {
        throw new NotImplementedException();
    }

    public IEnumerable<TEntity> GetAll()
    {
        return dbContext.Set<TEntity>().ToList();
    }

    public TEntity GetById(int id)
    {
        return dbContext.Set<TEntity>().Find(id);
    }

    public Task Update(int id, TEntity entity)
    {
        throw new NotImplementedException();
    }

    IEnumerable<TEntity> IGenericRepository<TEntity>.GetAll()
    {
        return dbContext.Set<TEntity>().ToList();
    }
}

ICustomerRepository.cs

public interface ICustomerRepository : IGenericRepository<Customer>
    {
        Task<Customer> GetCustomerDetails();
    }

CustomerRepository.cs

 public class CustomerRepository : GenericRepository<Customer>, ICustomerRepository
    {
        private readonly BaseDBContext _dbContext;

        public CustomerRepository(BaseDBContext dbContext)
            : base(dbContext)
        {
            _dbContext = dbContext;
        }

        public Task<Customer> GetCustomerDetails()
        {
            throw new NotImplementedException();
        }
    }

Customer.cs

 public class Customer
    {
        [Key]
        public int CustId { get; set; }
        public string CustomerName { get; set; }
        public string City { get; set; }
        public string Designation { get; set; }
    }

StartUp.cs

 public void ConfigureServices(IServiceCollection services)
        {
            services.AddEntityFrameworkSqlServer().AddDbContext<BaseDBContext>();

            services.Configure<DBConfiguration>(Configuration.GetSection("DBConfiguration"));

            services.AddScoped<DbContext, BaseDBContext>();

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);

            services.AddTransient(typeof(IGenericRepository<>), typeof(GenericRepository<>));
        }

CustomerController.cs

private readonly ICustomerRepository custRepository;

        public ValuesController(IOptions<DBConfiguration> dBConfiguration, ICustomerRepository _custRepository)
        {
            custRepository= _custRepository;
        }