我是跟着一个导师，一开始一切都很顺利，但是我把项目发布到github后，项目的文件有了变化，我想我做错了什么，我后来编辑了内容。但有一点我错过了，我想我不能建立数据库连接（或我误解了它）我也尝试了解决方案的页面上关于这个问题，但它没有工作。你能帮帮我吗？
我得到的错误如下
System.AggregateException: 'Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Repositories.RepositoryContext Lifetime: Scoped ImplementationType: Repositories.RepositoryContext': Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbSet 1[Entities.Models.Product]“，同时尝试激活”Repositories. RepositoryContext“。）（验证服务描述符”ServiceType：存储库.合约.IRepositoryManager生命周期：作用域实现类型：存储库。存储库管理器“：在尝试激活“Repositories. RepositoryContext”时无法解析类型“Microsoft. Website FrameworkCore.DbSet 1[Entities.Models.Product]' while attempting to activate 'Repositories.RepositoryContext'.) (Error while validating the service descriptor 'ServiceType: Repositories.Contracts.IProductRepository Lifetime: Scoped ImplementationType: Repositories.ProductRepository': Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbSet 1[Entities.Models.Product]”的服务。）
InvalidOperationException: Unable to resolve service for type 'Microsoft.EntityFrameworkCore.DbSet 1[Entities.Models.Product]“，同时尝试激活”Repositories. RepositoryContext“。`
我一个接一个地检查了我的存储库层，我一个接一个地检查了我的Program.cs链接，我检查了微软网站上的说明，但我想我无法以我目前的知识水平解决这个问题。
我的repositorycontext页面如下所示

public class RepositoryContext : DbContext
{
    public DbSet<Product> Products { get; set; } 
    public DbSet<Category> Categories { get; set; } 

    public RepositoryContext(DbContextOptions<RepositoryContext> options, DbSet<Product> products, DbSet<Category> categories) :
        base(options) 
    {
       
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder); 
        modelBuilder.Entity<Product>()
            .HasData(new Product() { Id = 1, ProductName = "Laptop", Price = 1000 },
                new Product() { Id = 2, ProductName = "Keyboard", Price = 500 },
                new Product() { Id = 3, ProductName = "Computer", Price = 2500 },
                new Product() { Id = 4, ProductName = "Monitor", Price = 1000 },
                new Product() { Id = 5, ProductName = "Deck", Price = 500 }
            ); 
        modelBuilder.Entity<Category>()
            .HasData(
                new Category() { CategoryId = 1, CategoryName = "Book" },
                new Category() { CategoryId = 2, CategoryName = "Electronic" });
    }
}

这是我在程序开头的代码

var builder = WebApplication.CreateBuilder(args);
builder.Services
    .AddControllersWithViews(); 
builder.Services.AddDbContext<RepositoryContext>(options =>
{
    options.UseSqlite(builder.Configuration.GetConnectionString
        ("sqlconnection"), 
        b => b.MigrationsAssembly("StoreApp")); 
});
builder.Services.AddScoped<IRepositoryManager, RepositoryManager>();
builder.Services.AddScoped<IProductRepository, ProductRepository>();

var app = builder.Build();

app.UseStaticFiles(); 
app.UseHttpsRedirection(); 
app.UseRouting(); 

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}"); 

app.Run();

这些物体的形状

public class Product
{
    public int Id { get; set; }
    public String? ProductName { get; set; } = String.Empty; 
    public decimal Price { get; set; }
}

public class Category
    {
        public int CategoryId { get; set; }
        public String? CategoryName { get; set; }= String.Empty;
        
    }