I'm getting this error while updating the db

Question

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
    optionsBuilder.UseSqlServer(
        @"Server=AHMET;Database=test;Trusted_Connection=True");
}
public DbSet<Product> Products { get; set; }
public DbSet<ProductFavorite> ProductFavorites{ get; set; }
public DbSet<ProductImage> ProductImages { get; set; }
public DbSet<Category> Categories { get; set; }
public DbSet<SubCategory> SubCategories { get; set; }
public DbSet<Member> Members { get; set; }
public DbSet<User> Users { get; set; }
public DbSet<Blog> Blogs { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    base.OnModelCreating(modelBuilder);

}

public class Category
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid CategoryId { get; set; }
    [Required]
    [DisplayName("Category")]
    public string Name { get; set; }
    public virtual IList<SubCategory> SubCategory { get; set; }
}
public class SubCategory
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid SubCategoryId { get; set; }
    [Required]
    [DisplayName("Subcategory")]
    public string Name { get; set; }
    [DisplayName("Category")]
    public Guid CategoryId { get; set; }
    [ForeignKey("CategoryId")]
    public virtual Category Category { get; set; }
    public virtual IList<Product> Products { get; set; }
}

I give migrations the update-database command, I get the following error:

 

Error Number:1767,State:0,Class:16 "Foreign key 'FK_Products_Categories_CategoryId' references invalid table 'Categories'. Could not create constraint. See previous errors."

 

Thanks in advance for your interest.